noticed a few other people had the same problem I had with Ctrl + Shift + Alt + R not working and I think I've got a solution.
Don't use a wireless keyboard.
I had the same issue, never having a window pop up when I hit those keys together, but my keyboard was getting faulty and while I was out, my girlfriend changed my keyboard out to the PS2 I used to use (that's a plug in keyboard that's not USB, for anyone that's wondering). After that, I noticed I could get a window to pop up asking for the file name. Since then I've been too lazy to use a map, but I'll try it first thing after this post.
Something that has to do with keyboards not allowing more than three keys to be pressed at once. Had problems with online games because of that before.
