I just upgraded to CallMan 3.3(3)sr4a and started to get the same error. I am running Extended Services 3.1(1). The error appears every 10 minutes and fills the log. All services work fine. Is there a fix?
I had the same problem with the "group password is not configured" error and the work around you discussed regarding the Class attribute OU=groupname solved my problem also.Thanks so much.