1. SUEXEC is enabled
2. I install interchange cart through CPANEL
3. It works fine for a while
4. Stops working, and starts spitting out 500 Internal Server Errors
5. Disable SUEXEC, works fine again.

Why would this happen, and can I keep suexec running and still have interchange work? Anyone know about this problem?

Try /scripts/fixinterchangewithsuexec

Could be /scripts2/ if it returns a file not found.

Sir, this is EXACTLY what just happened to us. Can you please let us know how you disabled SUEXEC?

Boris