problem with ripped dvds

[ereiamjh]

A while ago I started ripping all my DVDs to my media center hard drive so I could have access to them all. I used DVD Decrypter and ripped the whole movie (no menus or anything else) as one big vob file.
I've now decided that this wasn't the best idea and have started using DVD Shrink to split the vobs into multiple files and shrinking them so I can fit more on my hard drive.
The trouble I'm having is that only half of the rips that I have are being recognised by DVD Shrink. They were all ripped by DVD Decrypter in the same way, and they all play play fine in any media player. But DVD Shrink will not recognise half of them to allow me to re-author them. Anyone know why not? Or will I have to go back to my original DVDs which will take me much longer.

[Baldrick]

Any error msg in dvd shrink?
And what exactly are you open in DVD SHrink? you can't open just one big vob file, you need the entire dvd structure.

[ereiamjh]

Each ripped vob file is in a separate folder and has the original ifo file. For the ones that worked, I just placed a random video_ts.ifo into the folder and when I opened the folder in DVD Shrink it just opened up as a normal DVD would (but with no menus or special feature to select). I don't think DVD Shrink actually uses the video_ts.ifo, there just needs to be one in the folder for it to be recognised as a DVD (I tried it with blank files that I just renamed as video_ts.ifo and it still worked). The ones that won't work just open up as empty folders. There's no error message.

[Baldrick]

Maybe it will work if you use fixvts or recreate ifos with ifoedit.

[ereiamjh]

I've just tried both of them and it didn't work. I've tried opening them with DVD Rebuilder and I get the message "The directory selected does not contain DVD material"
I can't understand it