Word 2010 addin fails without warning

Question

I am having problems with a single user of my Word document level addin, written for Word 2010. I have deployed this solution around the world within my organisation without problems, but a single user of the template is experiencing the error shown below when they load the document (it doesn't even attempt to install via ClickOnce).

I have an Excel addin which is running on the same machine without problems (and it talks to the same web service, etc), so it's just the Word addin that's causing problems.

The key issue is that there is absolutely NO HELP whatsoever as to what's going on - no error message and nothing in the Windows event log! Useless.

Answer 1

try setting VSTO_SUPPRESSDISPLAYALERTS to 0 as explained in http://msdn.microsoft.com/en-us/library/ms269003(v=vs.80).aspx, restart word and try to load your add-in again - does it show now some error message? I would also look into event viewer to see if there are some messages regarding this.