This is quite a serious problem that anyone could face using Plesk 8.2 for Windows. If you are trying to delete a domain name and getting any of these two errors given below, the solution given will definitely help you.
1. Error: Unable to remove domains: Problems occured while removing domains: Table::select() failed: no such row in the table
2. Error: Unable to remove domains: Problems occured while removing domains: Unable to remove hosting: Unable to delete virtual host: websrvmng failed: Unexpected error