After updating to the latest version of ISPConfig, Whenever i want to change the password of a user account, i get Unknown column 'user_webdav' in 'field list', and the password is not updated. ISPConfig Version: 2.2.38 I upgraded from 2.2.20 or something around that.
I fixed the problem by cross-checking the ISPconfig database (with the sql file included in the archive) and had to add this column to several of the isp_isp_* tables. Apparently, some way during upgrading it did not change this.