Hello, I've already upgraded plesk 7.5.6 for windows to plesk 7.6.1, no much pain. the problem appears when i start to upgrade to sitebuilder 3.1 from 2.0.x. when i install it from add/remove plesk entry, i got error message "1:Cannot connect to the server. Please check your connection settings and verify that SQL server is in the correct state" and from event viewer "2:Error 1720. There is a problem with this Windows installer package. A script required for this installation to complete could not be run. Custom action CheckDB script error, MS OLE DB provider for sql server:login failed for user 'sa' line 931, column 2" My MS SQL 2000 server is running fine. So, what the reason is here? platform: windows 2003 server any hint or help, very appreciated!!