Doug, did you mean to post this under Karaoke Pro Workstation Forum or under the Karaoke Home Producer Forum? Let me know and I'll move it if it is for KHPro. You'll get more answers there.
I have just heard of another user reporting this same problem. I'm not MTUSUPPORT so I don't have the answer. Bryan (support manager) will look at this tomorrow as we now have 2 users.
If you would, go to the Microstudio Tech Support Forum and follow the instructions for running the DXDIAG.exe program and where to email it. That will give Bryan a leg up on this problem. The more we know about your system, the greater the chance we might discover a corrolation with the other user with this problem.
This problem is one of those that is system dependent, so we have to find out what in your computer is causing this to happen. If we can, we'll program around it, but finding a work-around is the first step to get you running.
Question.... When you export the CDG song and play it in Microstudio or a Karaoke CDG Player, are the lyrics the same garbled appearence, or is it only in the KHPro 3.100 screen when playing?
Oh yeah... the demo and full release should never get "joined". However, I would uninstall everything that is KHPro and then redownload 3.100 from our website and reinstall it again. Let us know what happens doing this.