Tried editing someone's name - had no problems.
Only guess is it's a composite edit that confuses it, try recreating it and if it's something consistent that you're doing, then something's up. Make sure the decyption/encryption completes properly, though, and that the file sizes are 769KB (dataT) and 29KB (dataP).
Have done some more updates - a few cosmetic tweaks here and there, fixed the issue with not outs in career histories, and added player photo and club badge viewing facilities (and hence got rid of the images tab). As for creating histories in game forms that aren't yet there - I'm not sure it's possible with the current code structure that I use. Will look into it after I've done squads, but it could lead to a total loss of alignment in my other variables, and screw the whole lot up. Or I might just have omitted it out of laziness, like I did with the not outs...
Squad editing is coming along in my mind and in test builds, too.