Hi there, i've removed backup exec 12.0 from one of our customers servers and no it wont re-install. Here are the errors in the install log
08-15-2013,16:24:07 : There is no MSSQL$MSSQLSERVER Service
08-15-2013,16:24:07 : V-225-226: Unable to connect to SQL Server. ***To search for information about this error, click here
then it continues for a bit then...
08-15-2013,16:35:07 : V-225-205: ERROR: Unable to open the physical file "C:\Program Files\Symantec\Backup Exec\Data\BEDB_Dat.mdf". Operating system error 2: "2(error not found)". sql:EXEC sp_attach_db 'BEDB',@filename1 = N'C:\Program Files\Symantec\Backup Exec\Data\BEDB_Dat.mdf', @filename2 = N'C:\Program Files\Symantec\Backup Exec\Data\BEDB_Log.ldf' ***To search for information about this error, click here
08-15-2013,16:35:07 : V-225-118: Error installing BEDB ***To search for information about this error, click here
08-15-2013,16:35:07 : Action ended 16:35:07: InstallFinalize. Return value 3.
I've noticed that the sqlserver (bkupexec) service is still installed after removal, not sure if that helps