Main Processor Error Detected
There are several problems that could cause this error. Memory Corruption (either hardware or software) usually is at the root of the problem
Workaround / Fix
If the corruption is simply software, the corruption can be cleared by performing a diagnostics system clear. Try this first. Once the diagnostics system clear is performed, if error comes back, there is most likely a hardware memory failure. The console will need to be sent to the factory to be repaired.
NOTE:Your show should first be saved to disk before trying the following: