Outlook Addin, When Loading Error Ribbon_GetDCVisible

Question

I have an outlook VSTO addin, I get the error Ribbon_GetDCVisible Exception occurred while calling the function GetVisisble when it loads. Yhe stack trace shows my last function called is the ThisAddIn_StartUp() handler and it is e mpty.

Any ideas?

EDIT:

I just made a blank outlook 2013 addin and it gave the same errors. So obviously something is wrong there.

EDIT2:

Reinstalled office, no luck. Even using XML, and a blank addin I get Ribbon_GetDCVisible Exception occurred while calling the function GetVisisble when opening a mail item with any addin created with VS even if no code has been added to it at all.

Answer 1

Answer was to rebuild and check startup code. My problem was a duplicate key in dict during startup.