Tool gun won't work right

I once was playing Gmod and the Tool gun started acting up, not spawning what I want to spawn… BUT when I click on a prop or ragdoll, it DOES spawn… Can I get some info on why my Tool gun is doing this?

So wait did this only happen once? Or is this a reoccurring problem?

Reoccurring problem…Also, it just works fine in Multiplayer, not single player.

Hmmm I did have this problem once I think but im not sure how to fix it…

Oh…ok. :<

Addon conflict maybe. Or garry broke something.