It doesn't matter what the DDA drivers are, the problem is you cannot scan with Root Kit scanner. If you get this message go to the desktop where the file (mbar) was placed, open the mbar file next find the plugin tab, open it and you will see a program called (FixDamage.Exe) run it, and follow the prompts. If that doesn't allow you to run the Anti Root Kit, which would be odd, Down load and run Chameleon this will also repair damage, then if needed run (fixdamage.exe) again. That should do it, you will get back to normal again after the Anti Root Kit program completes its sometimes very lengthy scan. Nothing else comes close to the strength of these programs.