To: Roylaott
Try saving DVD to your hard disc first and import VIDEO_TS.IFO file into the program from HDD.
If the crash occurs again, please attach a screenshot of the error that you get. Also open the VIDEO_TS.IFO file in the program once again, choose the preset, then click on Advanced > File Information and take a screenshot of this window.
As far as I understand, the crash occurs when you convert a particular DVD only? Can it be played on your PC without any problems?
If you preview this movie in AVS Video Converter (in the Edit window), i.e. try to play it up to the end, does the crash occur as well?
Best regards