Tosse: All I know, is the only way I can get the
same exact error as the one your speaking of, is to have an incorrect path set for a sprite.
I haven't tested it, but if the sprite in question "lives" in your
sprites folder in Hammer, perhaps that's why you can see it in-editor and not in the game--I'm grasping at straws here now Tosse!
Final word from me. Try not hitting the "browse" key either. In Hammer, you should simply have:
sprites/spritename.spr And nothing else, unless you have a subdirectory for the sprites folder, which you should not
Elon: Just tried it and my "glow3.spr" shows up fine. Unrelated probably: Some of my weapons models don't show up in-editor--3.5Beta--, but show up in the game just fine.