Unable to "Add New Item" in Solution Explorer

[cf-michael]

I've been developing various Cloud Applications Studio (SDK), CAS for short, in Windows 10 for over a year now. Today I was starting a new project on our test tenant and got an error when I tried to "Add New Item" in the Solution Explorer window.

Everywhere I try to invoke the action/command, whether in the Solution Explorer window's toolbar or the Context Menu, I get the same pop-up error message stating:

Provide value on 'System.Windows.Baml2006.TypeConverterMarkupExtension' threw an exception.

Any help would be appreciated as this stops me from doing my work.

Best Regards,

Michael

[former_member268378]

Dear Michael,

I would suggest you to contact your local IT team to check and fix this issue in your local machine.

This could be due to some corrupted files in your system.

Thanks & Regards,

Deepty