Quote Originally Posted by joypunk View Post
The dev version of Jamba does not have this option. (If it does, I sure can't find it.)
Correct, there is no solo mode for 0.5. The /jamba solo command was a hack for 0.4 to stop the no player messages.

If you are willing joypunk, I can work with you to make Jamba become invisible in solo mode. I imagine you'll have to check an option on the team screen for that character and give the character a special tag, but I think we could come up with something.