"Multiple Instances of this application's Installer are running. This one will stop and let another complete."
I just got this when I tried to enter Spiral Knights. I've played many times before, and this only just started happening. It won't let me play! I have tried restarting Steam entirely, checking through processes to see if another instance of Spiral Knights existed (it didn't) I even reinstalled the game (twice!). Anyone got an idea of why this is happening?
Cheers!
Yeah, I have done a few times :( Even tried going onto another computer and trying it there! Still the same message.
Have you tried logging into another Steam game? Is it just on SK? (I don't use Steam for SK, it could be one of the compatibility issues with steam that they're trying to fix )
Yep, just tried running Terraria, Portal 2, and Magicka. All work fine, it's just Spiral Knights thats being problematic. I would assume it is to do with the Steam+SK compatibility shizz that's being complained about nowadays.
Probably, I'm out of ideas on my end, hopefully some one else will be able to help you!
Restarted my computer twice more and reinstalled it again (really want to play it) and it's finally started to work again. Thanks!
Have you tried restarting your computer? Some time programs don't shut down completely and run "hidden" in the background noise of the other data on your computer.