rhmckay

Tried what you said after the ECU was idle for about 10 hours but still the same. ECU not picked up by OBD scanner.
I can only assume the ECU is faulty.
I will try to get another from a local scrapyard for a MG TF 135 and try again later after shielding has ended.

Another question unrelated.
Is it possible to remove your software from a PC and hence reduce the license count by one, as the second PC I installed it on is being scrapped and it was just installed for a test.
If not I will store the second PC incase I have problems with windows in the future.