I\'m having difficulties with serveral of my VB.Net projects that I have upgraded to Visual Studio 2015. These projects have be upgraded over many years from visual studio 2003
I could reproduce the error - note: I'm in the UK:
.
Private Sub Form1_Click(sender As Object, e As EventArgs) Handles Me.Click
Dim test As DateTime = Now
Debugger.Break()
End Sub
Run the project and click the form - the watch window will display the error, and the popup over test will not show the date.
I've fixed my projects by removing unnecessary localisation. I guess it was adding English and English UK versions of the resources.
Edit: this worked for the simple cases, but some of the projects I maintain have circular dependencies. Yuck. In this situation, building any of the projects would pull in the unwanted resource dlls from a referenced project. To break the cycle I just deleted the unwanted dlls from the referenced project's bin folder before building, so that they are not copied in. I've 'sent a frown' to microsoft describing this problem. I've spent a day and a half now tidying up the mess...