Adventures of Tron: Technical Help Needed

First, the setup...

I have a modded Atari 2600 Light Sixer outputting composite and S-Video.

I have a Tevion USB Adapter which takes S-Video, Composite, Cable, and Left/Right Audio channels as inputs and carries the signals into the proprietary software "Hypermedia Center."

The system works great for every game I have tried EXCEPT Adventures of Tron.

I have Adventures of Tron on an actual cartridge, and I have the ROM on my Harmony cart, so I have tried it both ways, and both ways lead to the same results.

The game fires perfectly. The flash screen shows nicely.

Then, when I tap the joystick and Tron falls along the center beam, PICTURE FREEZE. Total video signal lock. But I still hear my movements and any collisions.

This happens both in S-Video and with composite cables.

I have tried unplugging the cables with the game still running, and the video signal still refuses to work.

Any ideas, suggestions, or even a reason why this is happening on this particular game?

-Keith

P.S. I have attached a video file, but it instantly stops during the Tron "falling" sequence.