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How can I open a File Dialog in WPF app that is being converted to a UWP app via Desktop App Converter

I have an app I created in WPF. Current in WPF, I'm using the Microsoft.Win32.SaveFileDialog file picker to let the user select a file location to save to.
I'm in the midst of converting this app to a Windows Store compatible app, via the Desktop App Converter application. When I use the Win32 picker in the UWP-converted app, it just hangs and eventually crashes, so that doesn't seem to be happy.
It looks like there is a UWP-compatible file picker Windows.Storage.Pickers.FileSavePicker, which is available using the Nuget package UWPDesktop.
Unfortunately, this is giving me the following warning -
Type 'Windows.Storage.Pickers.FileSavePicker' can only be used in UWP apps, not Desktop or Centennial
This seems pretty clear to me, so, finally my question is What dialog picker am I supposed to use for a desktop converter UWP app?
Seems like there are 2 options -
There's some kind of 3rd type of file picker that I'm unaware of, that's compatible with both frameworks.
I use some kind of check in the app to see what framework is active (somehow) and use the appropriate file picker.
Thanks in advance!

You can continue to use the Win32 picker in your converted WPF app. That is supported and expected to work.
To answer why you are seeing a crash here:
If you have Office 2016 installed, there was recently a bug introduced with an Office update that is causing the file picker dialog to crash for converted apps. The fix for this bug should go out very soon in a servicing update.
To confirm that this is indeed the bug you are hitting you can look at the crash reports for your app, and you should see a crash in the module grooveex.dll.
Thanks,
Stefan Wick - Windows Developer Platform

I ended up building a sample app containing just the problematic dialog in an otherwise empty app, with the plan of sending it to Stefan over MS.
Of course, everything looked good, so I played with it a little more and eventually figured out what might have happened.
I was running some async code just before the dialog was executed, and it looks like that would fail silently, causing the app to hang indefinitely.
I don't think this will help anyone, just wanted to close the loop.

UWP Xbox One difference between running in Retail to Dev Mode

I am having severe problems getting an app working in Retail Mode on the Xbox One.
The app works fine in Dev Mode, I have uploaded to the store and it passes certification fine but when the app is then installed via the store onto a Retail Xbox One it refuses to run.
Firstly it was crashing whilst on the splash screen, no error message just returning back to the Xbox homes screen, Due to now being in Retail mode I cannot connect a debugger to the app. I've setup my own exception handler to send errors to my backend server and it was crashing with the exception:
Cannot create instance of type 'Microsoft.Advertising.WinRT.UI.AdControl'
It's using the latest Microsoft.Services.Store.SDK and therefore Microsoft.Advertising SDK for XAML.  I've took out the AdControl from MainPage.xaml and now we have a UI come up on screen! Not ideal as the ads are needed for monetization.  
Unfortunately that's not the end of the problems, during the app initialisation it copies files from the Data folder of the solution to localstorage, for some reason it's now hanging on the following:
StorageFile anjFile = await localCacheFolder.GetFileAsync(App.AbilitiesFileName);
What's so different running apps on the Xbox in Retail Mode compared to Dev Mode? The app also functions fine on mobile and desktop so I know there shouldn't be any problems. The only way to try and find out what's causing problems is to comment out lines, or put placeholders in the app to change a debug textbox on screen to see what part of code is running and rebuild and submit to the store again, wait for certification and then redownload from the store to the Xbox, a very slow and time consuming task and I'm now up to Submission 12 of an app I'm getting very frustrated with!
Update: Seems like the AdControl issue started around 9th Feb and is affecting several apps on Xbox One and is possibly due to a framework update to the libraries involved. Not sure why it isn't affecting Dev Mode as well.

Thanks a lot for reporting this issue out on the forum and helping us with investigations. The root cause of the issue has been identified and fix has been rolled out. The framework update will take a couple of days to reach most devices as and when any new app or updated ad-enabled app gets updated on the Xbox device.
Dev Mode only: The issue doesn't affect Dev mode and only Retail mode since Retail mode actually is the most secure and most strict environment and requires that all binaries involved are signed and certified. If anything is missing, Retail mode is the only one which will surface the issue in this fashion - not loading the libraries.
Fix and roll out process: You could reach out to the users who reported problems for your app and ask them to re-install your app. The other option that you (as a developer) have is to push an update to your app (only version change) and push it to your users. This will get the framework updated on the end user devices and speed up the fix roll out. Those developers who had taken off the ad control, please put it back and push the update for your apps.
Please feel free to reach out to us (msft-aia-help#microsoft.com) in case of any issues or queries regarding this topic. Thanks for the patience and sorry for the inconvenience caused during this period.
-Vivek.

Seems like the AdControl issue started around 9th Feb and is affecting several apps on Xbox One and is possibly due to a framework update to the libraries involved. Not sure why it isn't affecting Dev Mode as well.
I have got a update from our engineering team, this issue has been fixed. But you may need to uninstall and reinstall any of the affected apps in your XBOX, after that it should work fine.
Please let me the result after you reinstall all the affected apps in your XBOX.
Thank you.

Windows Phone 8.1 app crashes when downloaded from store

I'm dealing with a strange issue that's been giving me headaches for a long time.
I've got a Windows Phone 8.1 (WinRT) app, whose first version I published a couple of years ago. Over the last few months, I've been working on a major update which includes augmented reality as the most prominent feature.
Obviously, the app needs to make use of the camera preview, and that's where trouble starts. I've read discussions in other threads about problems with the camera API, but I didn't find a definite solution.
Before submitting the update, I performed extensive tests on my Lumia 620 and all worked fine. But if the app is downloaded from the store, it crashes and the camera picture goes green as soon as the camera preview starts. It is the very same app package and all required capabilites have been declared.
So basically I can't tell if my app works or not, unless I submit it to the store.
Any help will be appreciated.
Edit: After several hidden-app submissions, I've narrowed down the cause of the crash to the following block of code:
RandomAccessStreamReference rasr = RandomAccessStreamReference.CreateFromUri(new Uri("ms-appx:///Assets/Square44x44Logo.scale-100.png"));
var streamWithContent = await rasr.OpenReadAsync();
The last of the above lines causes the app to terminate. The same code works fine when the app is deployed from VS.
Any ideas?

It looks like the problem is now resolved. The cause of the crashes was the asset file. This file is a scaled version of the app tile, which is created automatically by Visual Studio. Using this file is allowed when the app is deployed from VS, but not in the store.

Click Once in Windows 10 NotifyIcon not displaying

So using the following diagram:
You can see that the only time when anything breaks is when I use ClickOnce in Windows 10, however the notifications work perfectly fine if I run it directly from the exe. When I run it using ClickOnce using the console I can see the same methods get hit in the console but the notifications don't show up. I have tried to get this fixed for a very long time now with no avail.
The click once is deployed to a network share. The ClickOnce notifications work fine on Windows 8. I have absolutely no idea what could be causing this.

So got into discussion with someone I know at Microsoft and it looks like in the latest version (that he said should be released somewhere in November 2015) should contain the fix for this issue.
Waiting it out and hopefully the fix comes, if not I will contact him again and see how things are going as I would say this is a really bad problem.

WP7-Emulator: Object Invoked has disconnected from its clients

I wrote some apps in C#, Windows Phone 7 (2010 Express Edition). I use Win7. The build is ok, it succeeds. When I start debugging session, the WP emulator appears and disappears a couple of time and then the program ends with the error: "Object invoked has disconnected from its client". I googled the net, search in stackoverflow, but found nothing specific (I mean C# and WP 7).
Have anyone any idea ?
Thanks

The problem is that, your memory is too low, the minimum requirements for the Emulator to run is at least 1.5 GB but 2 GB is recommended. Try upgrading your RAM and it should work. :)
fro here:http://social.msdn.microsoft.com/Forums/en-US/wpdevelop/thread/d7dee3ab-cae9-4a5e-827d-3c86ffd6afd5/

Try Building your Solution, if solution is getting build successfully (As you said),
Then Press Ctrl + F5 And let allowed Windows Phone Emulator to get fully load,
Now just try to navigate you app, and the close Emulator, and then try with F5 (Debug). It work for me
(As It may be the problem with low memory.)