I'm new at this, so here it goes.....if you have dvdfab platium 4 and have problems with copy of saw 4---go to control panel and delete all files with dvdfab in them--- do not restart pc yet---go to start---click search---click on all files and folders---then type "dvdfab" in all or part of the file name--once it finish showing all dvdfab file delete everything that has dvdfab in it----once done--restart pc---redownload dvdfab platinum only!!!! No dvdfab hd decrypter-- You don't need it!!!--download saw 4 and the green bar will run for about 20 to 30 seconds and you're done--It worked for me !!!