Snacko, I did a little work on the "replay" issue. It's not enough to simply start a new career. I did the same after installing 1.2 (not due to replay bug, but to restart in Asiatic fleet since the IDL torpedo track bug still ain't fixed) and I still wasn't able to check the "Replay" box.
So just now I deleted my entire SH4 save game folder, ran SH4 and started a new career. Saved as soon as I left port, and was able to check the replay box. Then was able to load and view the replay. The key is deleting entirely the save game folder, obviously there is a file in there somewhere with a "flag" that says replays are disabled. Not sure which one. If I ever get time maybe I'll try to find out...
Also, FWIW, you should be able to resume your 1.1 career from any of the auto-saves that were made when you were in port, if you still have them. It's only the manual saves you made at sea that are not compatible with 1.2. That's why the rule is,
always end your patrol before patching!!!!
Again, thanks for the info on why I couldn't save replays, it's much appreciated
DH