Quoted from LowScores:
Ack! It made it two games. Now he isn't registering movement of location again.
Another thing I noticed, is sometimes when I'm in the testing mode...I move into the slimer tests and cant get them to start. It doesn't reagister to do the test with the +, -, enter or even the start button.
I reboot the game and then the test works, but his location fails
I'd try reflowing the solder to the optos, then.