I tried with version 3.4 and then with 3.5.3.

At first with 3.4, I discovered that I could save but never open or export a project if there was any red. The app would simply die and close.

With 3.5.3 I fixed up all the red to make it black. If I run it in debug mode it appears to work. I perform the test export and export and save project and even reopen the project and all appears to work.

Of course the project is all black except to root title in orange because it is larger that 4.7G. I assume that is not the problem.

Before editing there was red. Somehow in one of the menus there were 2 sets of buttons and the second set which was unused had 160 buttons. It took quite a while to delete them all.

I did not try other players. No point, If I cannot compress it or burn it on a 4.7G then there's no point...

Is there a tool to examine the VOB problem and diagnose the problem?

thanks in advance,
tls1