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TuesPechkin unable to load DLL 'wkhtmltox.dll'

I've been using TuesPechkin for some time now and today I went to update the nuget package to the new version 2.0.0+ and noticed that Factory.Create() no longer resolved, so I went to read on the GitHub the changes made and noticed it now expects the path to the dll?
IConverter converter =
new ThreadSafeConverter(
new PdfToolset(
new StaticDeployment(DLL_FOLDER_PATH)));
For the past few hours I've tried almost all the paths I can think of, "\bin", "\app_data", "\app_start", etc and I can't seem to find or figure out what it wants for the path and what dll?
I can see the TuesPechkin dll in my bin folder and it was the first path I tried, but I got the following error:
Additional information: Unable to load DLL 'wkhtmltox.dll': The
specified module could not be found. (Exception from HRESULT:
0x8007007E)
Where is that dll and now can I get it as the library doesn't seem to contain it, I tried installing the TuesPechkin.Wkhtmltox.Win32 package but the dll still is nowhere to be found. Also I am using this in a asp.net website project so I assume that using the following should work for obtaining the path, right?
var path = HttpContext.Current.Server.MapPath(#"~\bin\TuesPechkin.dll");
Further information: https://github.com/tuespetre/TuesPechkin/issues/57

The Tuespechkin has a zip file as a resource in the Win32 and Win64 embedded packages for the 'wkhtmltox.dll' file.
What it does when you use the Win32 or Win64 Embedded package is unzips the file and places it in the directory that you specify.
I have been putting a copy of the wkhtmltox dll at the root portion of my web app directory and pointing the DLL_FOLDER_PATH to it using the server physical path of my web app to get to it.
According to the author, you must set the converter in a static field for best results.
I do that, but set the converter to null when I am finished using it, and that seems to work.
Tuespechkin is wrapper for the wmkhtmlox dll file.
The original file is written in C++ and so will not automatically be usable in C# or VB.NET or any of the other managed code domains.
The Tuespechkin.dll file DOES NOT contain a copy of 'wkhtmltox.dll'. You either have to use one of the other embedded deployment modules or install a copy of the 'wkhtmltox.dll' in your web app after downloading it from the internet. That is what I do, and it seems to work just fine.
I am using Team Foundation Server, and attempts to compile code after using the Tuespechkin routines will fail the first time because the 'wkhtmltox.dll' file gets locked, but all you have to do is simply retry your build and it will go through.
I had issues with the 32-bit routine not working in a 64-bit environment and the 64-bit environment not being testable on localhost. I went with the workaround I came up with after examining the source code for Tuespechkin and the Win32 and Win64 embedded deployment packages.
It works well as long as you specify a url for the input rather than raw html.
The older package didn't render css very well.
If you are using a print.aspx routine, you can create the url for it as an offset from your main url.
I don't have the source code I am using with me at this point to offset to your base url for your web application, but it is simply an offshoot of HttpRequest.
You have to use the physical path to find the .dll, but you can use a web path for the print routine.
I hope this answers your question a bit.

If you are getting this error -> Could not load file or assembly 'TuesPechkin.Wkhtmltox.Win64' or one of its dependencies. An attempt was made to load a program with an incorrect format.
In Visual Studio Go to -
Tools -> Options -> Projects and Solutions -> Web Projects -> Use the 64 bit version of IIS Express for web sites and projects.

I installed TuesPechkin.Wkhtmltox.Win64 Nuget package and used the following code in a singleton:
public class PechkinPDFConvertor : IPDFConvertor
{
IConverter converter =
new ThreadSafeConverter(
new RemotingToolset<PdfToolset>(
new Win64EmbeddedDeployment(
new TempFolderDeployment())));
public byte[] Convert(string html)
{
// return PechkinSync.Convert(new GlobalConfig(), html);
return converter.Convert(new HtmlToPdfDocument(html));
}
}
The web application then has to be run in x64 otherwise you will get an error about trying to load an x64 assembly in an x86 environment. Presumably you have to choose x64 or x86 at design time and use the corresponding nuget package, it would be nicer to choose this in the web.config.
EDIT: The above code failed on one server with the exact same message as yours - it was due to having not installed VC++ 2013. So the new code is running x86 as follows
try
{
string path = Path.Combine(Path.GetTempPath(), "MyApp_PDF_32");
Converter = new ThreadSafeConverter(
new RemotingToolset<PdfToolset>(
new Win32EmbeddedDeployment(
new StaticDeployment(path))));
}
catch (Exception e)
{
if (e.Message.StartsWith("Unable to load DLL 'wkhtmltox.dll'"))
{
throw new InvalidOperationException(
"Ensure the prerequisite C++ 2013 Redistributable is installed", e);
}
else
throw;
}

If you do not want run the installer for wkhtmltox just to get the dll, you can do the following:
As #Timothy suggests, if you use the embedded version of wkhtmltox.dll from TuesPechkin, it will unzip it and place it in a temp directory. I copied this dll and referenced it with the StaticDeployment option without any issues.
To find the exact location, I just used Process Monitor (procmon.exe). For me it was C:\Windows\Temp\-169958574\8\0.12.2.1\wkhtmltox.dll

In my case, I am deploying on a 64-bit VPS then I got this error. I have solved the problem by installing the wkhtmltopdf that I downloaded from http://wkhtmltopdf.org/downloads.html. I chose the 32-bit installer.

In my case, I have solved the problem by installing the Wkhtmltox for win32 at https://www.nuget.org/packages/TuesPechkin.Wkhtmltox.Win32/

This error: Unable to load DLL 'wkhtmltox.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E) is returned in two situations:
1- Deploy dependency not installed:
For solve this, you can install nuget package "TuesPechkin.Wkhtmltox.Win64" and use this code (for WebApplications running in IIS):
IConverter converter =
new ThreadSafeConverter(
new RemotingToolset<PdfToolset>(
new Win64EmbeddedDeployment(
new TempFolderDeployment())));
// Keep the converter somewhere static, or as a singleton instance!
// Do NOT run the above code more than once in the application lifecycle!
byte[] result = converter.Convert(document);
In runtime this code will copy the dependency "wkhtmltox.dll" in a temporary directory like: "C:\Windows\Temp\1402166677\8\0.12.2.1". It's possible to get the destination of file using:
var deployment = new Win64EmbeddedDeployment(new TempFolderDeployment());
Console.WriteLine(deployment.Path);
2- Microsoft Visual C++ 2013 Redistributable not installed:
As described here:
https://github.com/tuespetre/TuesPechkin/issues/65#issuecomment-71266114, the Visual C++ 2013 Runtime is required.
The solution from README is:
You must have Visual C++ 2013 runtime installed to use these packages. Otherwise, you will need to download the MingW build of wkhtmltopdf and its dependencies from their website and use that with the library. https://github.com/tuespetre/TuesPechkin#wkhtmltoxdll
or, you can install the Microsoft Visual C++ 2013 Redistributable:
choco install msvisualcplusplus2013-redist

Here is AnyCpu version, also support iis-base or winform application
using TuesPechkin.Wkhtmltox.AnyCPU;
...
var converter = PDFHelper.Factory.GetConverter();
var result = converter.Convert(This.Document);
Reference : https://github.com/tloy1966/TuesPechkin

Installing the Visual C++ Redistributable for Visual Studio 2013 resolved the error for me.
https://www.microsoft.com/en-us/download/details.aspx?id=40784

Beginner ILNumerics: install under VS2012

I am very much interested in ILNUmerics and would like to try the free version, but I am having troubles.
I have started with a console application and was trying to run the 'hello ilnumerics'console application but I noticed that VS fails to find MKL libraries.
I am using VS2012 under Windwos 8 (through Bootcamp on a MacBook Pro mid 2010; should it be relevant); I have installed the NuGet Packages extension from the Project solution. Then right-click on references in the solution explorer, 'Manage Nu Get Packages', fron online/search found ilnumerics in various versions. I chose 'ILNumerics' and install. I got 'ILNumerics' and 'ILNumerics.Native' added to my project. Then I can see ILNumerics under 'References' in Solution Explorer and also get two new folders /bin32/ and /bin64/ they both contain two DLLs named: libiomp5md.dll and mkl_custom.dll. I have checked their
'Copy to Ouput Directory' property and they are all set to 'Copy if newer'.
Apparently mkl_custom is not found. I write the following code, taken from the quickstart guide:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ILNumerics;
namespace ConsoleApplication3
{
class Program : ILMath
{
static void Main(string[] args)
{
ILArray<double> A = array<double>
(new double[] { 1,1,1,1,1,2,3,4,1,3,6,10,1,4,10,20} ,4, 4);
ILArray<double> B = counter(4, 2);
ILArray<double> Result = linsolve(A, B);
Console.Out.WriteLine("A: " + Environment.NewLine +
A.ToString());
Console.Out.WriteLine("B: " + Environment.NewLine + B.ToString());
Console.ReadKey();
}
}
}
and I get this exception:
An unhandled exception of type 'System.DllNotFoundException' occurred in ILNumerics.dll
Additional information: Unable to load DLL 'mkl_custom': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
If I do not invoke linsolve the ToString method of ILArray does work: if I comment // ILArray Result = linsolve(A, B);
I get the two matrices printed on the screen.
I have also tried to compute the determinant of a matrix and got the same exception: apparently any time I call mkl_custom VS is not capable to find it.
Any help/hint, please?
Also, is it necessary to install ILNumerics through NuGet on any project added to the solution? Would it be possible to install it locally once for all and then add the reference if necessary?

Two options:
1) Make sure, all binaries are accesible as intended: ILNumerics uses AnyCPU targets and chooses the platform dependend subfolder by adding the "bin32" / "bin64" directories to the PATH envoronment variable on startup. Possibly there is something failing on your machine? You can make sure by placing the correct binaries (depending on your platform) directly into the output path manually.
2) In case the error persists: mkl_custom.dll depends on some other dlls itself. One (libiomp5md.dll) is delivered with the ILNumerics nuget package. Others are expected to exist on your system: KERNEL32.DLL and MSVCR110.DLL. Make sure, you have these! If the kernel dll was missing -> call it a miracle and reinstall your system. If the msvcr110 is missing -> go here and install the "Visual C++ Redistributable for Visual Studio 2012".
In case the problem persists, you may file a bug on the ILNumerics bugtracker, because, the runtime should be there, as you wrote you are using VS2012. Possibly it is a versioning problem though.
EDIT: Since version 4.0 ILNumerics does not deploy the native binaries in bin32/ bin64/ subfolder anymore but installs all native dependencies systemwide into the GAC and System32/WOW folders. The old scheme will still work (for compatibility with old projects) though. But it is not necessary anymore to deal with any dependancies for ILNumerics explicitly. They should simply be found at runtime.

Like numbers303 said, ILNumerics.dll can't find a required dependency. You can brute force fixing this dependency by copying the required DLLs to the same directory as the ILNumerics.dll as a post build step, but I think there's a more elegant solution.
A VS2010 .NET console solution gets created by default with the x86 configuration. Compiling and running the ILNumerics example Hello ILNumerics! code with this configuration results in a DLL not found exception (mkl_custom.dll).
Re-targeting the solution via configuration manager to 'Any CPU' fixed the issue for me:
In Solution Explorer, right click on the solution and select properties. Select Configuration Properties and click on the Configuration Manager... button in the upper right hand corner. Make sure that the project that uses ILNumerics has the 'Any CPU' selected. If 'Any CPU' isn't available as a selection, select '' from the pulldown and create an 'Any CPU' platform based on your current platform. Usually this just means accepting the default in the 'New Project Platform' dialog. You'll probably also want to modify the 'Active solution platform:' to contain an 'Any CPU' target as well.
Rebuild/run.

In my case it helped to install "Visual C++ Redistributable for Visual Studio 2012" although I work with Visual Studio 2010 with the corresponding "Visual C++ Redistributable for Visual Studio 2010" installed. Which worked fine as long as the mkl_custom.dll is not needed. But colleagues of mine dosn't have this problem without having the 2012 Redistributable installed.

OpenCVSharp and Visual Studio 2012

I am trying to build a project using opencvsharp v2.4 64x in Visual Studio 2012. The project is built using .net 4.5 and x64 target. I've installed VS08+VS10 sp1 prerequisites. i've included all the opencv dlls (version 2.4.0 64x) in my project to copy to executable directory including TBB.dll (and checked that they actually end up in the correct folder).
However, on running the software i get the error: An exception has occurrred because of P/Invoke. Please check the following ... System.DllNotFoundException: Unable to load DLL 'opencv_core204' ... etc
any ideas why this is happening? maybe VS2012 is not supported to build opencvsharp 2.4?

Seems like i still missed out a few native dll's which code204 was dependent on.
here is the complete list that is required. It now works in visual studio 2012 with 64-bit and .net 4.5 - however a few examples wont run (delaunay) using 4.5 but only in 3.5. no idea why...
OpenCvSharpExtern.dll
OpenCvSharpExternGpu.dll
opencv_calib3d240.dll
opencv_calib3d240d.dll
opencv_contrib240.dll
opencv_contrib240d.dll
opencv_core240.dll
opencv_core240d.dll
opencv_features2d240.dll
opencv_features2d240d.dll
opencv_ffmpeg240.dll
opencv_ffmpeg240_64.dll
opencv_flann240.dll
opencv_flann240d.dll
opencv_gpu240.dll
opencv_gpu240d.dll
opencv_highgui240.dll
opencv_highgui240d.dll
opencv_imgproc240.dll
opencv_imgproc240d.dll
opencv_legacy240.dll
opencv_legacy240d.dll
opencv_ml240.dll
opencv_ml240d.dll
opencv_nonfree240.dll
opencv_nonfree240d.dll
opencv_objdetect240.dll
opencv_objdetect240d.dll
opencv_photo240.dll
opencv_photo240d.dll
opencv_stitching240.dll
opencv_stitching240d.dll
opencv_ts240.dll
opencv_ts240d.dll
opencv_video240.dll
opencv_video240d.dll
opencv_videostab240.dll
opencv_videostab240d.dll
QtCore4.dll
QtGui4.dll
tbb.dll
tbbmalloc.dll
tbbmalloc_debug.dll
tbbmalloc_proxy.dll
tbbmalloc_proxy_debug.dll
tbb_debug.dll
tbb_preview.dll
tbb_preview_debug.dll

How to Interfacing SWI Prolog to the Visual Studio 2012

I have a program that interfacing SWI-Prolog in Visual Studio. Previously, I used VS2010 (XP) and everything works fine. Then I upgrade my VS to become VS2012 (Win7) and now I have a problem in my code.
When it comes to the following code:
PlEngine.Initialize(param);
it always gives me the following exception message:
The specified module could not be found. (Exception from HRESULT: 0x8007007E)
Can anybody spot what mistake that I made or if possible some modification that I have to do, due to the upgrading process?
Additional information regarding my code:
I used the most updated swiPLCs library (version: 1.1.60301.0)
my 'param' in my code above is: string[] param = { "-q", "-f", #"c:\program files (x86)\pl\"};
I have set the path environment variable to: c:\program files (x86)\pl\ and c:\program files (x86)\pl\bin
I have this setting in my code: Environment.SetEnvironmentVariable("SWI_HOME_DIR", Global.g_prologLocation);
I had the reference to: swiPLcs.dll
I already tried to use the SWIProlog 64 bit, but I still have the same problem
Any help is really appreciated.
Many thanks

I finally got the answer myself.
Unlike VS2010, In VS2012 it seems that you have to add SWI-Prolog package into VS2012.
So add SWI.Prolog package using Nuget.
How?
See: https://nuget.org/packages/SWI.Prolog
And VS2012 will recognize the SWI.Prolog now.
Thanks anyway

Looks like MSVS 11.0 Beta spoiled a MSVS 10.0 installation

I ran into compilation problems with my MSVS 10 after installing MSVS 11Beta. Now, when I compile my C# Projects in MSVS 10 (Projects created in MSVS 10; Target framework: 3.5), I get errors MSB4216, MSB4028 with following text in output window:
1>Task "GenerateResource" skipped, due to false condition; ('%(EmbeddedResource.Type)' == 'Resx' and '%(EmbeddedResource.GenerateResource)' != 'false' and '$(GenerateResourceMSBuildRuntime)' != 'CLR2') was evaluated as ('Resx' == 'Resx' and '' != 'false' and 'CLR2' != 'CLR2').
1>Task "GenerateResource"
1> Launching task "GenerateResource" from assembly "Microsoft.Build.Tasks.v3.5, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" in an external task host with a runtime of "CLR2" and a process architecture of "x86".
1>C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(2199,5): error MSB4216: Could not run the "GenerateResource" task because we could not create or connect to a task host with runtime "CLR2" and architecture "x86". Please ensure that (1) the requested runtime and/or architecture are available on the machine, and (2) that the required executable "C:\Program Files (x86)\Microsoft SDKs\Windows\v8.0A\bin\NetFX 4.0 Tools\MSBuildTaskHost.exe" exists.
1>C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(2217,7): error MSB4028: The "GenerateResource" task's outputs could not be retrieved from the "FilesWritten" parameter. Object does not match target type.
1>Done executing task "GenerateResource" -- FAILED.
How can I fix these errors?
EDIT:
Mentioned file "C:\Program Files (x86)\Microsoft SDKs\Windows\v8.0A\bin\NetFX 4.0 Tools\MSBuildTaskHost.exe" exists.
C++ projects are compling without problems.
Reinstalling VS10 doesn't solve the problem.
This is GenerateResource task, that must compile resx-file, but generates an exception:
<!-- But we can't use those parameters if we're targeting 3.5, since we're using the 3.5 task -->
<GenerateResource
Sources="#(EmbeddedResource)"
UseSourcePath="$(UseSourcePath)"
References="#(ReferencePath)"
AdditionalInputs="$(MSBuildAllProjects)"
NeverLockTypeAssemblies="$(GenerateResourceNeverLockTypeAssemblies)"
StateFile="$(IntermediateOutputPath)$(MSBuildProjectFile).GenerateResource.Cache"
StronglyTypedClassName="%(EmbeddedResource.StronglyTypedClassName)"
StronglyTypedFileName="%(EmbeddedResource.StronglyTypedFileName)"
StronglyTypedLanguage="%(EmbeddedResource.StronglyTypedLanguage)"
StronglyTypedNamespace="%(EmbeddedResource.StronglyTypedNamespace)"
StronglyTypedManifestPrefix="%(EmbeddedResource.StronglyTypedManifestPrefix)"
PublicClass="%(EmbeddedResource.PublicClass)"
OutputResources="#(EmbeddedResource->'$(IntermediateOutputPath)%(ManifestResourceName).resources')"
MSBuildRuntime="$(GenerateResourceMSBuildRuntime)"
MSBuildArchitecture="$(GenerateResourceMSBuildArchitecture)"
Condition="'%(EmbeddedResource.Type)' == 'Resx' and '%(EmbeddedResource.GenerateResource)' != 'false' and '$(GenerateResourceMSBuildRuntime)' == 'CLR2'">
I tried to debug MSBuild script (.csproj). Just before the fatal GenerateResource task I checked all the properties and items. There was nothing about "8.0A" but only about "7.0A"

There is an ugly way to fix the problem: renaming folder "C:\Program Files (x86)\Microsoft SDKs\Windows\v8.0A". I hate to accept this answer.

How long is your username?
It seems that there is a bug when the username is 20 characters long. If your username is 19 characters or less it works fine.
I have opened an issue on connect.
Edit:
Have you tried setting the environment variable DisableOutOfProcTaskHost to true as suggested in the connect issue, that worked for me.

A similar questin was asked on the MSDN forums. Did you reboot after installing VS11?
http://social.msdn.microsoft.com/Forums/en-US/msbuild/thread/7d955d96-ff73-47d3-8830-85ea321eb4ab

This issue occurred for me on my TFS 2010 build server after installing VS2010 and then installing .NET Framework 4.5. This allowed me to build .NET 4.5 projects but any VS2008 project targeting CLR2 (.NET 2.0 -3.5) I attempted to build would return the error. None of the suggestions on the handful of sites talking about this issue worked.
Rebooting - Did not fix the issue
Setting DisableOutOfProcTaskHost = true in an environment variable and also within the project file - Did not fix the issue
Username of my build account was already less than 20 characters
Renaming windows SDK folder - N/A since I did not have VS2012 and the 8.0A SDK installed... just .NET framework 4.5.
In any case, to fix this I uninstalled .NET 4.5, repaired VS2010, and then rebooted the build server. Now I am able to build VS2008 and VS2010 projects with no issues.
Luckily I no longer need to build .NET 4.5 projects as that team decided to go back to .NET 4.0.

Another possible fix is to change the target framework of your projects to .Net 4.0. It's not always a solution, but it certainly is a possibility if all else fails.

Worked for me: Removing the bin and obj folder for problematic folders and restarting the solution

In my case, I received that error message when trying to build a solution on a 32-bit Windows 7 machine. The way to resolve the error for me was to right-click on the project, choose properties, then go to the Build tab. In here I changed the "Platform target" from "Any CPU" to "x86". HTH

Setting Setting DisableOutOfProcTaskHost = true in an environment variable worked for me.