Steam says I need to install the program, but.............

[kknobl]

I ran my Steam copy of T:ANE just fine yesterday. However, when I was going to run it today, Steam told me that it needed to be installed. The program is still on my HD in the same location it's always been, and I can run it if I go into the Steam/steamapps/TANE folder and click the T:ANE .exe file. Any idea why Steam doesn't seem to think it exists on my computer anymore. I have tried to verify the local files from Steam, and it shows no disk usage.

[philskene]

Is it actually a patch or update it wants you to install?

[kknobl]

I'm not sure. That could be a possibility that hasn't occurred to me. I'm afraid to mess with it too much, as I don't want my content wiped out or overwritten.