Well, long story short im trying to optimize the Iso which reduces the size to about 550 Mb's, and im using the file "Mana Khemia Student Alliance USA.ISO" (Which is the normal version), and every time i try to save as (Whether its iso or cso) an error report pops up, UMDGen closes, and i get this "C:\DOCUME~1\Owner\LOCALS~1\Temp\34ac_appcompat.txt", as the file to be included in the error report.