Here's how to find out.
First, save a replay to the desktop.
Double click it, and it creates stderr.txt
Open stderr.txt, and the very top line it should say something like:
Unable to change to dir C
Program Files\Toribash-2.7-beta4
Get the name of the folder it says it's trying to write to, and name your tb install folder that.
Like, I changed Toribash-2.7, to Toribash-2.7-beta4.