I've been trying to play Fallout 2 on a Windows 7 64bit Home system, and I'm having issues.

I've solved the graphic issues, and I got it to run once, but now when I try to continue... I get a pop-up that says:

"Could not find the master datafile. Please make sure the Fallout CD is in the drive and that you are running Fallout from the directory you installed it in."

Apologies if this is not the right forum to post it in, but I thought maybe one of you had run into this.

I've installed Killap's mod to get it to run on modern systems.

Just buy it off of GOG.com for $5.99. It works perfectly, and is DRM free. Also, be sure not to miss Killap's Unoffical F2 patch and restoration project.