TMPGEnc suddenly unresponsive

I have TMPGEnc Authoring Works 4.0.7.32 and am running it on Vista x64. The company says it cannot guarantee that it will work on x64 but it's been working fine for the past six months except until today when, after I input all of my project settings and loaded a video file I got an error message that said" Could not find a usable media writer drive. You cannot use the media writer function"

The first thing I did was check in device manager to see if my two LG DVD burners are ok and they are, then I did some test burns on my other burning software and they worked fine, so it has to be in the program, however I uninstalled, then reinstalled it and I got the same thing.

Also I know it's not the media because it will not even start the transcoding phase and you don't even need a disc in at that point to see if it's working or not.

I assuming that all of a sudden it has decided it will not work with the two LG burners so it would be real easy to just go ahead and by two newer models, but that's almost a shame because the LG's have just worked flawlessly, however I really like this program so I might just go ahead and get two new ones. Also I did try updating the firmware on them but that didn't help. I'm stunped!