SLC 500 Fixed Controller L20 Fault

I'm getting a fault as soon as I put the controller in run. When I go to go to error the plc is saying the problem is
Major error halt S:1/13 = 1
Under description
The module in slot 0, which is required for the user program is detected as being the wrong type.

I have no moduals in Slot 0 or slot one.

Thanks for any help solving this.

What's shown in the I/O configuration in the program? If the program expects a module to be there and it isn't (or the wrong type) it will fault the processor.

The fault is a flashing fault. It only comes on when I try and run the program. Here is the RSS file I am trying to use. It has no programming on it I was just trying to start from scratch...but couldn't get the fault to leave.

I will post here from now on...I didn't mean to make a copy :0)

I figured it out thanks for the help. I had two controllers the same. I was pulling the rack configuration from the 1747 L20A and writing it to the 1747L20C. So it was writing the configuration for a AC input instead of a DC Sink input.