Unable to load plugin, ID already in use


We have a plugin deployed via Yak which installs via the Package Manager (TestPackageManager command on Rhino 6).

I deployed a new version this week and then we found that the plugin cannot be loaded due to “ID already in use”. Now, we have been using the same ID for months now. And this happens on multiple machines (so it is not just a bad setup on one machine).
Removing the plugin physically does not solve the problem.
Reverting to older plugin versions also gets the same error.

Anyone that has seen the same thing?


If you have both a DLL and an RHP with the same name in your package you should delete the DLL.

1 Like

I removed the .dll and now it works! Thanks!