I think the solution here (my 2c) is that you first upload the standard 240E before uploading the tuned 240E. That's what Mike (BPM) did with my car. That way you can ascertain if its the tuned file that causing the upload issue. May be you can give it a try. Good luck
I know other vendors are banned from commenting on other products but I don't think it would hurt if someone like Mike can chip in with his thoughts about this rejection from the DME to accommodate a tuned 240E.
This forum is about helping each other and not bashing or ridiculing each other. Lets see what happens.