The technician was in error - SDAT's can only be installed in the Enterprise products. I apologise for that.
Is that all they suggested? I am very surprised and it might be a good idea to contact Technical Support Chat again and this time ask for escalation.
As you would have had to run the Virtual technician in order to contact Technical Support, what did it say? Usually it can fix most problems.
Have you been using Registry Cleaners and Optimizers lately as this situation is typical of what happens when they are used? Good files are trashed along with the not-so-good.
The best thing to do here is to uninstall everything in the normal manner via Control Panel/Add or Remove Programs (XP), Programs/Uninstall a Program (Vista/Win7) and then run the MCPR removal tool linked under Useful Links above and reboot.
Now reinstall your product directly from your online account.