Publishing Issues - EXE file

Hi.

I've completed a video and published to an EXE file. The size is 30MB and its a software simulation.

I've done many of these and never had the below issue.

When I publish, some screens are blocked white or partially blocked. (see attached).

It maybe before, so I copied and pasted the slide and republished and it worked. But now it keeps happening.

Any recommendations on how to fix?

Thanks

Tony