Uploaded a new version. Added some debug output to the verification screen and changed the way the sizes are calculated for verification.
If you get a submission error, it will show what the file size should be so you can compare it to yours. It those numbers match, then the file size is changing before it is written to the server, and after it is read from your drive. I hope that is not the case, but let's see if it is.
This is going to be the last error to correct and then we can go live. I still have some work to do, but it will not impact submissions and updates.