I tried to get help from the Facebook development team with no luck, so I hope someone can help me:
I had an application that used the MessageDialog from the Facebook SDK to share via Facebook Messenger. It works as expected for a year. However, it suddenly stopped working (no code changes). I tried upgrading to the latest version of the SDK for Facebook that Xamarin supports, but this gave me some compilation errors that I could not solve.
From there, I created a completely new project from scratch, which only logged into Facebook and MessageDialog. (In case it was something else in my application, it might have interfered). Unfortunately, the problem is not resolved.
I filed an error message with Facebook in case this is an error, but they have not returned to me yet.
Has anyone come across this? Any ideas how to solve? I will continue to research and publish any results here ...
Thanks,
James
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