I am experiencing the same problem. The following error was given from sql query analyser
Msg 2714, Level 16, State 6, Line 1
There is already an object named 'tblADComputers' in the database.
Msg 1779, Level 16, State 0, Line 2
Table 'tblADComputers' already has a primary key defined on it.
Msg 1750, Level 16, State 0, Line 2
Could not create constraint. See previous errors.
Msg 1781, Level 16, State 1, Line 2
Column already has a DEFAULT bound to it.
Msg 1750, Level 16, State 0, Line 2
Could not create constraint. See previous errors.
Msg 515, Level 16, State 2, Line 1
Cannot insert the value NULL into column 'Domain', table 'lansweeper31.dbo.tsysadmins'; column does not allow nulls. UPDATE fails.