"add-in is an invalid file type"
Ok. Great. How do I solve it?
For my project, it turned into a missing dll. Simple? Yes, but it took hours to track down. Hopefully this post helps out the next person.
Chris H. suggested the following means of finding the cause of an error:
You can
"debug" the issue with the logging.config approach, which I show in
the custom tasks book. The generated log file will show the DLLs that are
loaded and provide more details about problems encountered.
To turn on logging:
Thanks Chris.
