removing database

Because I have been testing the setup of the manager I think my database is in a bit of a mess. So I have decided to delete the db and start again however when I click delete database in the AMS maintenance i get the following error.

Delete command failed 0x0000A410 error
*: goint to drop database of avast! on …

cannot execute command for 0x00000007d, error 0x80040E1A…

Cannot involk script to drop database error 0x0000A410

get very similar message when I click recreate db.

you have to stop avast server manager service before using those commands