World's first frame accurate H.264 AVCHD cutter without re-encoding!

I think the problem is not about video file

because
long time ago,I still use some old version(I forgot the version number,maybe 1.2.2a or 1.2.4)
I can see the picture in preview window



MY cogfig
XP SP3
GeForce 9500GT
I'm not using dual-monitor display

preview window not working?