Generating Optimized Media Crashes v15.0B.057

I just updated to the latest version and upon trying to generate optimized media, the software crashes and has me send a crash report (which I did). Waiting for my activation card to arrive so still on beta.
How do I correct this issue? Version 14 worked fine.
Thanks!
Anthony
How do I correct this issue? Version 14 worked fine.
Thanks!
Anthony