Please suggest solution for XOR CHECK FILE NOT FOUND with the info I provided

@jeffdi: This is a pre-check issue; who would be the best person to respond?

Please see consolidated table below . Apologies for contents in tables which got distributed as separate messages

The XOR checks in flow.tcl and precheck are entirely different. In flow.tcl the XOR check verifies that the gds output by magic matches the gds output by klayout. In precheck, the XOR check verifies that the caravel/caravan connections have not been modified when compared to the golden layout.