Original VOBs invalid? Please help

Original VOBs invalid? Please help 

I've been struggling for a couple of weeks on a DVD split. I'm attempting to do a standard split to 2 discs. I basically leave all the options defaulted. However, viewing the results in PowerDVD, you can not rewind, fast forward or use the navigational slider. PowerDVD will just lock up. I read some other posts, by Derrow I believe, that suggested to re-run the VOBs through IFO with 'strip streams' and 'strip VOB-IDs' checked, but checking all the streams and VOB-IDs as to not actually strip any of them. This is supposed to update the navigation packs. However, when I run this I get "no navigation packs found in VOB file. Looks like you're dealing with invalid VOB files." Strangely enough, the discs seem to work fine in my Apex standalone. However, I'm worried that a less forgiving standalone would not be able to handle the disc if it does in fact have bad VOBs. Could the original VOBs be "invalid"? Anyone have suggestions? Thanks jrjazzman

I suggest you follow your idea and start testing out your backup on other standalones. Either a friend's, another family member's, or go to a place that sells DVD players.