Matloub - No problem. The project I am trying to do is the simple "Hello World" program included in the Primer 2 Quick-Start. Nothing more than letting the IDE create a CircleOS framework. Since my last post I did get it to work by twisting the PC board in the Primer 2 enclosure. If I put pressure on just the right spot I can occasionally get it to talk reliably to the Ride IDE. I am pretty sure at this point that my problems are power supply related. Inside the Primer 2 I saw where a lot of rework had taken place trying to get the power supplies to stabilize, and an internal part of the switch was even broken off. With a scope I can see that there are huge amounts of ripple on the supply lines (>400mV). I have also seen other symptoms: the clock resets to 00.00.00 randomly, the power-on audio message plays whenever it feels I need a comforting voice, and the battery meter on the LCD shows a blinking 1/2 charged indicator most of the time. I think this one is a paperweight ;-)