Wrong disc inserted error

[reyles1992]

I got Arkham City, including all DLC, off Steam today. However, whenever I try to run the game itself (I can get to the launcher), it says that the wrong disc is inserted. I tried running the game with the disc drive open but then it says no disc inserted.

I've contacted technical support but after completing Arkham Asylum over the last two days, I am hoping to get it running ASAP so any help is appreciated.

Thanks

[reyles1992]

I restarted my computer and it turned out there was a patch Steam hadn't downloaded when I got the game in the first place, so it's now working.