I think there's a mastering problem with KFH. Send your IFOs to SlySoft.
Here's how:
1. Disable
AnyDVD.
2. Go to "my computer".
3. Right-click the DVD drive and pick "open".
4. Copy every file that has the extension IFO (I'm assuming you don't have extensions turned off like some N00b) to your desktop.
5. Zip 'em up and send 'em to SlySoft.