Migrating custom add-ins from 2014 to 2016

[RKuemper]

We just switched from 2014 to 2016 and I am having trouble integrating a custom add-in that was made for us. Currently, in the add-in manager, the load behavior is locked as "Automatic / Unloaded". In 2014 its load behavior was listed as "Automatic / loaded". I can check the loaded checkbox but it reverts back to "Automatic / Unloaded" after I close / reopen the manager.

I have made sure to place the .addin and .dll files in the 2016 equivalent of the 2014 locations. Attached is the Add-in Manager with the load behavior highlighted.   If anyone could share any insight or solutions it would be greatly appreciated.

[woodstylee3 · Accepted solution]

 The behaviour would indicate the add in is not loading correctly. It probably uses part of the API which has changed.

 To start Diagnosing and to resolve would require the source code, do you have these available?

[RKuemper]

Good call! It turns out that the reference path (Autodesk.Inventor.Interop ) in the .dll file was pointing to Inventor 2014.  Thanks!