IQ Failure on Edge 830

I have a small app that works fine on the simulator, but when I put it on the Edge 830 it fails and has the IQ Failure.  I take out some code and put it back and it starts working again.  Made another small change and it works on my wife Edge 1000 and now works on my Edge 830.  Made another small change ( to a constant ) and now it fails on the 1000 again.  I am just copying the .PRG to the correct folder on the edge.  Is there any known issues with copying objects on the edge?

Ronnie