Hi! I have a bit of a problem...

I have a few of the textures I use most often saved and in a post in my LJ for convenience. Since I have them saved to my own server I just copy and paste them from the entry onto my icon in Photoshop. However very recently I I haven't been able to copy images from outside Photoshop and paste them into Photoshop. I can copy and paste within Photoshop however. Has anybody else had this problem, or does it sound more like a computer problem?

Thanks in advance. :]

EDIT: Solved. Thanks everybody! :]