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Unable to catch JsonReaderException

I received the following error on the deployed system:
See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
Newtonsoft.Json.JsonReaderException: Unexpected character encountered while parsing value: S. Path '', line 0, position 0.
at Newtonsoft.Json.JsonTextReader.ParseValue()
at Newtonsoft.Json.JsonTextReader.ReadInternal()
at Newtonsoft.Json.JsonTextReader.Read()
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.ReadForType(JsonReader reader, JsonContract contract, Boolean hasConverter)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)
at JsonWrapper.DeserializeJson[T](String data, ITraceWriter tracer)
This is the simplified JsonWrapper.DerserializeJson code from the DLL:
public static T DeserializeJson<T>(string data, ITraceWriter tracer) {
try {
return JsonConvert.DeserializeObject<T>(data, new JsonSerializerSettings { TraceWriter = tracer });
} catch (JsonReaderException jrex) {
throw new CustomException("Unable to deserialize Json message.", jrex);
}
}
I know why the exception is being thrown, however I am unable to figure out why it is not being caught by the try-catch block.
This code is a DLL that is being consumed by one of our clients. I am hoping this is a fix can be done solely in the DLL.
Any insight into this would be great!

Your JsonException might be sourced in another assembly.
If your version of Newtonsoft is different from the version in the other assembly, the specific catch block won't catch it (a generic Exception catch will).
The solution is to use the same version of Newtonsoft.
This was mentioned by dbc in the comments.

I did find out that I was not catching the correct CustomException in my implementing methods; once fixed, I have not been able to get the JIT error again.
Still haven't figured out why JsonReaderException was shown as a JIT error and not my CustomException.

Identifying the field causing the error in Crystal Reports

When I try to export to disk a crystal report from within asp.net code, crystal report throw an exception. Exception just says "Invalid object format", which means clearly some field in report is failing data type conversion. Now, I can try and resolve the problem, if I know the field name.
Sadly, crystal report is stupid, and never adds the exact field name in exception message. So, I am unable to find which field is causing the problem. Unless I can find that field, there is no way for me to resolve the issue. So, all I want is a way to identify that field.
P.S. This issue happened when we moved all of our reports to latest version of Crystal Reports, and happens only with couple reports, out of the hundreds we have.
Edit:
Stack trace of the error I am receiving
CrystalDecisions.CrystalReports.Engine.InternalException was unhandled by user code
HResult=-2147221760
Message=
Error in File RepairTag {40C68F49-F0B7-46D6-9E89-6E105808B13B}.rpt:
Invalid object format name.
Source=CrystalDecisions.ReportAppServer.DataSetConversion
StackTrace:
at CrystalDecisions.ReportAppServer.ConvertDotNetToErom.ThrowDotNetException(Exception e)
at CrystalDecisions.ReportSource.EromReportSourceBase.ExportToStream(ExportRequestContext reqContext)
at CrystalDecisions.CrystalReports.Engine.FormatEngine.ExportToStream(ExportRequestContext reqContext)
at CrystalDecisions.CrystalReports.Engine.FormatEngine.Export(ExportRequestContext reqContext)
at CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToDisk(ExportFormatType formatType, String fileName)
at FANUC.CSMS.Common.BusinessTier.ReportBC.GenerateReportAndExportToDisk(String strExportFormat, String strMapPath) in d:\FANUC\CSMS\BusinessTier\Common\ReportBC.cs:line 227
at FANUC.CSMS.Common.BusinessTier.ReportBC.GenerateReportWithSelection(String strReportID, String strClause, String strExportFormat, Row objLocalizedNames, String strSortFields, Hashtable htblLocalizedNamesForSubReport, String strFilterString, Row objParamaterFieldsValues, String strMapPath, String strFontOverwriteReqd, String strGroup) in d:\FANUC\CSMS\BusinessTier\Common\ReportBC.cs:line 180
at FANUC.CSMS.Reports.Web.Reports.Page_Load(Object sender, EventArgs e) in d:\FANUC\CSMS\CSMSWeb\Reports\Reports.aspx.cs:line 98
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
InnerException: System.Runtime.InteropServices.COMException
HResult=-2147483077
Message=
Error in File RepairTag {40C68F49-F0B7-46D6-9E89-6E105808B13B}.rpt:
Invalid object format name.
Source=rptcontrollers.dll
ErrorCode=-2147483077
StackTrace:
at CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass.Export(ExportOptions pExportOptions, RequestContext pRequestContext)
at CrystalDecisions.ReportSource.EromReportSourceBase.ExportToStream(ExportRequestContext reqContext)
InnerException:

Unknown name ComException on a referenced dll in a C# project

I'm writting a C# application which use one of the dll written in C++ as reference. I can use that dll namespace and my project compiles fine. However when I run it I keep getting error in one of the line where I assign a property its value. The exception error I got was the following:
A first chance exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll
2013-06-03 12:26:32 - Unknown name. (Exception from HRESULT: 0x80020006 (DISP_E_UNKNOWNNAME))
2013-06-03 12:26:32 - at System.RuntimeType.InvokeDispMethod(String name, BindingFlags invokeAttr, Object target, Object[] args, Boolean[] byrefModifiers, Int32 culture, String[] namedParameters)
2013-06-03 12:26:32 - at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
2013-06-03 12:26:32 - at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData)
2013-06-03 12:26:32 - at sstObjTapLib._DsstObjTap.set_CapCode(String )
2013-06-03 12:26:32 - at hpOutput.CTapPagerCom.MessageLoop() in c:\shs\Arial 8.1\XmarkClient\hpOutput\CTapPagerCom.cs:line 225
I initiated the dll object using the following code:
m_ctlTap = new sstObjTapLib.ctlTap();
Below are the three screenshots:
The properties of the DLL I use
The object browser of the dll I use
A breakpoint that shows where the exception occurs.
Looking at the stack error above, it seems that .NET is trying to call some method that does not exist, but I'm just setting a property value. Can somebody point me in the right direction or what I might have missed?
A noted point: While in debugging, I'm looking at my loaded module view, however I don't see this dll name one in the list of my loaded module.

I'm not sure why but the computer I worked with had this same dll installed. I know this by viewing it using the third party tool called RegDllView .
So I went in, unregister the dll I was using, verify it is also gone from the registry and then re-register it again. Clean out my project and recompile everything, and got the exact code to work.
Looking at what I did I think for some reason the application did not recognize the GUID supplied to point to the proper COM.

Compiler Issue in Windows 7: A generic error occurred in GDI+

We have an application that we need to begin testing and developing in Windows 7 environment. It works fine compiling under WinXP in VS2008, no problems. However when I went to compile it on a windows 7 machine using VS2008 today I get the following error:
Error 12 The "GenerateResource" task failed unexpectedly.
System.Runtime.InteropServices.ExternalException (0x80004005): A generic error occurred in GDI+.
at System.Drawing.Image.Save(Stream stream, ImageCodecInfo encoder, EncoderParameters encoderParams)
at System.Drawing.Image.Save(MemoryStream stream)
at System.Drawing.Image.System.Runtime.Serialization.ISerializable.GetObjectData(SerializationInfo si, StreamingContext context)
at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter, SerializationBinder binder)
at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter, SerializationBinder binder)
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph)
at System.Resources.ResourceWriter.WriteValue(ResourceTypeCode typeCode, Object value, BinaryWriter writer, IFormatter objFormatter)
at System.Resources.ResourceWriter.Generate()
at System.Resources.ResourceWriter.Dispose(Boolean disposing)
at System.Resources.ResourceWriter.Close()
at Microsoft.Build.Tasks.ProcessResourceFiles.WriteResources(IResourceWriter writer)
at Microsoft.Build.Tasks.ProcessResourceFiles.WriteResources(String filename)
at Microsoft.Build.Tasks.ProcessResourceFiles.ProcessFile(String inFile, String outFile)
at Microsoft.Build.Tasks.ProcessResourceFiles.Run(TaskLoggingHelper log, ITaskItem[] assemblyFilesList, List`1 inputs, List`1 outputs, Boolean sourcePath, String language, String namespacename, String resourcesNamespace, String filename, String classname, Boolean publicClass)
at Microsoft.Build.Tasks.ProcessResourceFiles.Run(TaskLoggingHelper log, ITaskItem[] assemblyFilesList, List`1 inputs, List`1 outputs, Boolean sourcePath, String language, String namespacename, String resourcesNamespace, String filename, String classname, Boolean publicClass)
at Microsoft.Build.Tasks.GenerateResource.Execute()
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask, Boolean& taskResult)
I cannot for the life of me run this one down. I have visited the msdn forums and find that it is an issue for a lot of people, but no consistent solution has been provided by MS or anyone else.
Has anyone seen this before and fixed it? Please advise is needed!
Thanks

I compiled using the command line msbuild and that identified the problem location.
It was a resx file in a class which had one unused image in it. I removed that and all was good again. Can build fine now.

After hours of troubleshooting, I opened and built the project using the VS 2010 command line prompt using MSBUILD "my solution file path here". This provided a more visible sequence of build events, and I found my project was failing just after it compiled form 16. The forms compiling appeared to be going in order of the objects in the solution explorer. So I checked the next form and found it contained a picture box. I also checked the form after that one and found I could not open the designer without errors(object reference not set to instance of object). So apparently, the problem was now two-fold.
To resolve I had to remove the picture box object from the first form I identified as problematic (it was not being used any way) as it appeared to be corrupted. I found the second form with the null reference exception was using a user control. The code for the constructor of the user control was attempting to pass an object to a container before calling InitializeComponent(). This created the null reference since the container hadn't event been created in InitializeComponent when the problematic code was called.
After resolving the issues in the above paragraph my solution compiled under Windows 7.

There is a GDI update for Windows 7, I think, if I'm not mistaken. Maybe that will solve the issue. Does your solution build using Msbuild on the commsnd line?

Do you use TIFF images in your app?
Some time ago, I also had a problem with TIFF images as part of reports that wouldn't compile under Win7 x64 although it compiled like a charm under Vista x86. The error message also involved GDI+. I saved the images under a different format (PNG) and the problem vanished.
At the time (around March 2011), I first ensured that my Windows was up-to-date but it didn't solve the problem. So maybe there is such an update as mentionned by Erik but it didn't come through Windows Update back then (Maybe it's newer).

Delete the resources from the resource manager (right click on each and delete) then add them back. for me it solve the problem.

i had same problem.
i just used msbuild myProject.sln command and it fixed and built successfully with no errors! now i can manually build my solution.
no need to reAdding my resources

Howto take a glimpse into mscorlib?

I want to read data into RSAParameters structure ( RSAParameters ) and did check twice, that the data is correct. But still, I get an error "invalid data" exception for this:
bei System.Security.Cryptography.CryptographicException.ThrowCryptogaphicException(Int32 hr)
bei System.Security.Cryptography.Utils._ImportKey(SafeProvHandle hCSP, Int32 keyNumber, CspProviderFlags flags, Object cspObject, SafeKeyHandle& hKey)
bei System.Security.Cryptography.RSACryptoServiceProvider.ImportParameters(RSAParameters parameters)
How can I take a look into the source code to check why _ImportKeys is throwing an exception? I have no experience with .dll 'decryption'..are there any symbols to reference somewhere for visual studio 8.0? Thank you.

Use .NET Reflector to disassemble the DLL you want to examine.

You can also use JetBrains dotPeek. It is 100% free.