The turn in the drop box is TPMs turn #3 (It is The Republic's turn).
When you do that turn TPM, and hit end turn, when you save it, name it Turn04-ToJag.
If you did that, then Jag has pulled the turn from the dropbox and has not yet completed it, and thats where the hold up is. I was confused as well.
OK sounds good...I'm going to check my files tonight to make sure...maybe I didn't upload JAG's turn into Dropbox. In any event, I'll do as you say...when I'm finished with my turn, I'll advance the number of the file. But just so that my understanding is correct:
The number on the file reflects the turn number that the next player (in my case, JAG) is about to take, NOT the turn you yourself have just taken.
Therefore, when SAI finishes his turn 3, he names the file "Turn03 - ToTPM", but when I finish my turn 3, I name the file "Turn04 - ToJAG".
Don't mean to belabor this, sorry.