I am currently having this same issue, I haven't been able to get a fix from this information here. Anyone else have any ideas?
UPDATE:
once I unchecked local cert it turned into INV-300 error, I check the other forums posts but the files that are linked either don't exist any more or I simply cannot open them. I'm use an old beast of a laptop just to run this game since my main unit is a mac for my business. I'd really appreciate any input, it's been too long since I did some blasting.