I recently got DTv4 and i had 3.47 before and i chose to upgrade from 3.47 to v4 in the install (i dont know if this has to do with my problem) and when the sdtp thing poped up i clicked ok and when i restart the comp it hangs up at the log on screen and though i only waited at the most 10 minutes nothing happened. after many attempts to log on normally i cant figure it out (im in safe mode right now) so basically i cant do anything i cant reinstall v3.47 cus my OS tells me that windows installer is not initiated. since the attemp to install dt 4 ive had no luck logging on normally. i tried to remove the sdtp file and put it back in like the directions said for sdtp but they dont work i dont know where to unstall dt4 because it prolly didnt get installed due to my problem. i also took out the sdtp file out of the driver directory and i still have no luck. much help would be gladly appreciated thanks.