emmm. Does anyone have this issue?
I have a texture PNG assigned to my model and I open the texture by selecting the edit button in the material tab. This will open Photoshop for me so I can edit the texture.
All fine and dandy at this point.
I then finish the PS edit and save but Photoshop tells me that I cant save it as the PNG is already in used or still open and I always have to do a Save As. Then I have to delete the original texture so I can rename the new one to the deleted name, I have to do this evey time I edit a texture in Maya with PS CS4 never had this issue with CS3.