Why am I losing my saved games???

[csstanl]

I have recently installed the GWX3 mod and twice now have lost my saved game.

The first time was on my first patrol and I was just about to attack a large convoy off the English coast but as it was already late I decided to save and continue the next day. Lo and behold when I flashed up SH3 my save game was gone - I thought it might be because I had saved my game whilst submerged and/or near many other ships.

Now today it has happened again, on my first patrol once again. This time (a new career) I was in the Med, on the surface and not another ship to be seen.

Is there a bug that don't know about? IF so, is there a fix? It's becoming quite frustrating.