ESRIRegAddIn /u does not work in ArcGIS 10.1 with 10.0 AddIns

Discussion created by uismedia on Sep 4, 2012
I have an AddIn created in ArcGIS 10.0. When i register the AddIn with ESRIRegAddIn the Addin is written into the folder ...\ArcGIS\Addins\Desktop10.0. This is OK. When i now try to unregister the Addin with ESRIAddIn AddIn-ID /u it does not work. ESRIAddIn searchs the AddIn in folder Desktop10.1 not in Desktop10.0.
What i am doing wrong?