My addins come up missing now that I have upgraded to 10.3. Anyone have a similar issue?
Not sure if this is the same issue or not, but there was a discussion talking about Add-In issues with 10.3 at When building Add-In with ArcGIS 10.3 SDK and Visual Studio 2013, get error "Unable to create .esriAddin"
Hope it helps.
Thanks Lisa, I figured out my issue. When I updated ArcDesktop my python packages were removed so I needed to resinstall them.
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