I've actually been having that same problem a lot lately, Eddy. I can't seem to add frames to the replays either. It just doesn't work when I save the file.
What usually works for me is to go into sp, set the mf to 13819237123 then press r so it starts a new game with those settings. Then the replay should load correctly. I think it has something to do with remember game rules.
i have a totally post modern tattoo of a scalene triangle.
<DeadorK> fair maiden
<DeadorK> if the cum is going to be in your mouth
<DeadorK> it shall be in mine as well