DVD to 2DVDR (VOB file is too BIG) Help!

[looj]

Hey guys, I need a little help. I have been splinting DVD movies into 2 DVDRs for a while now. So far, I've been pretty lucky. Until now that is. I have just came across a couple of DVDs that put all of it's main movie VOB files (usually divided into several files about 1 gig) into 1 big file (over 6 gig). When I try to split it using IfoEdit (like I always have done) it didn't work. The program just stops and says that an error has occured and will be closed. No matter how many time I try, it will not work. I've tried reinstalling the program and it still won't working. But when I went back to splint DVDs that divided it's VOB files into 1 gig, it worked just fine. So, if any body out there have ran across this problem, and was able to find a way around it, please let know. Your help will be greatly appreciated.