Invalid pointer operation in fshed

I tried to edit something from a *.fsh file in photoshop... When I save it in *.bmp I went to fshed and import the new file to replace the old one...

Everything works fine, but when I tried to open again the same *.fsh file, I got a "Invalid pointer operation"

What is that??? Thanks for helping me... And I tried anyway to get it in the game, but when I lauched a game, I got the microsoft explorer error...

Thanks to give me some tips!

This eror me send wn i open nba 2005 or laiter *.fsh files