I also have experienced the "No Video_TS.ifo found!" exception while using the latest version of DVDStripper on one particular episodic, PBS DVD series.
All backups of my other episodics and 100% of my single features processed perfectly.
After repeating processing & again obtaining the "No Video_TS.ifo found!" anomally, I created a work around which produced a perfectly working DVD with PowerDVD and my set-top DVDPlayer, when burned;
1) Copied over 3 files from the DVDStripper "temp" or "working directory";
VIDEO_TS.IFO, VIDEO_TS.BUP & VIDEO_TS.VOB to my "destination" directory.
2) Ran the VTS_01_0.IFO in the "destination" directory through IfoEdit, v0.95 of course, selecting "VOB Extras" to strip & correct the vobs & navigation.
Hope this is helpful.