AVS Video Converter 6.3 dropping frames

[LLavelle]

I am using a registered AVS Video Converter 6.3 with Vista Ultimate 64-bit to convert VOB files. I have tried every file format (VOB to MPEG, VOB to MOV, etc.,) and the converted files all have some (low %) missing frames on playback.
Converted files must be 100% clean. Currently 95% is excellent but the 5% random jumpy parts spoil the entire file.

Anyone else have random dropped frames when converting VOB files using AVS Video Converter 6.3 ?

See attached jpg for more details.

Vista Ultimate 64-bit
Quad core (all cores are active during conversion)
16GB RAM
RAID 0 (1TB)

Should I reinstall AVS Video Converter 6.3 ?

Thanks.

[LLavelle]

Unrelated 2nd question.
After burning a video DVD (DVD+R) how does one add data files?