CHRISTIANTPSP:
#1 is referring to multi-session copy protected discs. There are volumes of discussion covering some "work arounds" in copying this material in the forums. Just search multisession.
#2 is referring to a file that is missing in the opersting system.In the lthtread that's linked below there's a post containing a zipped GDIPLUS file for downloading, unzipping and installing this file. Just scroll down the first page untill you se a post from support containing the GDIPLUS zipped file.
http://forum.mtu.com/showthread.php?...5&pagenumber=1
#3 I'd guess is referring to your product registration number which came with the download email, not the serial number of the burner.
Hope this helps.
George