Aha ok thx, i didnt know that
Can you try again and press the validate button?
Iam curious what comes up after you pressed it.
I had a simular problem but not ignition but injectors, only one was firing a couple of revs.
Turned out it wrong values in the config but vemstune did not overwrite them with the wright values. I delete the lines in the config and started vemstune again to save new values and evrything worked fine.