I've seen a few people remark on the problems with the replay system, and I figured I'd add my problems into the pot.
I currently have 10 replays saved already, and if in the course of the game I want to save another one, I click the View Replay button. The main replay window comes up. I click Save, and this screen comes up
All is normal there. I choose a replay to delete, since I have 10, by clicking the 'x' at the right. Then this screen comes up:
The 'Continue' box is greyed out, so I can't delete any replay. Since I can't delete, I can't save.
Thanks for looking into it.