MC41FS Application stopped after updating to 7.01

I'm getting an application stopped, critical error code on my MC41FS.

The error code it flashes is R4:1 followed by yellow flashes 37,2,1,5

This specific code is not listed in the manual.

This error only started occurring when the system was updated from IQAN 6.08 FW to 7.01 FW.

What does the error code mean?

The application stop comes up intermittently when the ignition switch is turned on (digital input to the MC41FS). The ignition switch input is used to enable some communications function groups and a couple of interlocks checks in a safety group.

Thanks,