I removed the add-in by selecting in Excel 2013:
- Manage: COM Add-ins
So now it does not appear in the list of available add-ins anymore.
I can see the folder with Dax Studio dll's in a folder under c:\\Programs (I have the 64 bit version installed)
I've also tried your suggestion to do a custom install, but no luck?
On another machine I have the 32 bit version and it points to "file:///C:\Program
Files (x86)\Dax Studio\DaxStudio.vsto|vstolocal"
I've tried to add a similar path to the afflicted machine, but it does not understand the |vstolocal part.
Thanks for the help!