Subtitle workshop 6.0b video playback problems

Hi
I have just installed Subtitle Workshop 6.0b.
I have problems with the program video preview.
I am getting this message:
"The following error (Ezerodivide) was derrived from object TfrmMain (frmMain):
"Floating point division by zero"
Please write to subtitleworkshop@gmail.com informing what you were doing when this error occured.
Press OK to continue, and Cancel to exit the program."

Is this error due to codec pack settings?

No, that is a bug in Subtitle Workshop.

Try this setting:
SW menu > Movie > Video Renderer

Already tried that. Still not working.
Hans