How to Reinstall using Steam

[vcplz]

I followed the instructions detailed by 'Your Computer' and Steam told me that the game is all there and accounted for. However, the game crashes when I try to launch it. The error message is very long and detailed, so I didn't think it would be appropriate to paste it here.

So vcplz, are you saying I should "delete local content" first then just reinstall the game using Steam? Would that fix the problem? Is that what you did? I'm okay with losing save files and such if it comes to that.

I'm not freakin' out yet. I'm confident there's a solution. I've done stuff like this with games in the past and it's always been easy to just reinstall. The thing that throws me for a loop is having just recently got a mac and also being unfamiliar with the finer details of Steam.

I really loved Amnesia, but I'm not hurtin' really bad for another playthrough just yet. But I would like to get the game back up an functioning.

i thought i would have lost everything but i didnt which was amazing i have two account that i play on and both had their autosaves still and the custom story progress