Hi Mikko I upgraded collective.plonetruegallery from 1.3.3 to 3.3.1, and got this output from running plonectl in fg. Thank you. -- View this message in context: http://plone.293351.n2.nabble.com/Error-deactivating-Add-on-tp7565690p7565707.html Sent from the Installation, Setup, Upgrades mailing list archive at Nabble.com.