As I always do, I installed TG3 from the Administrator's account so that it will be available to all users. Now I have a strange problem while trying to use the new program when in my non-priviledged account. Even though I can explicitly run TG3 by double-clicking on the new icon that is now on the desktop, if I try to "Open With" a tgd file and navigate to the tgd.exe executable under "Program Files\Planetside\Terragen 3" the Windows 7 file manager doesn't accept it. Only Notepad and Terragen 2 are listed as being programs that can open a tgd file. If I double-click a tgd file, it runs Terragen 2 as before. Should I have installed TG3 under my own account? It works properly from the Administrator's account but I never do anything other than administrator stuff from that account. Both TG2 and TG3 show up under "Open With" while in the Administrator account but only "TG2" shows up while in my normal unpriviledged account.
Dragging and dropping the tgd file onto the new shortcut on the desktop for Terragen 3 doesn't work. A little Empty Set (circle with backslashe through it) appears and nothing happens when I drop it onto the shortcut. If I double-click the shortcut to Terragen 3, though, the program does run but with default settings because no file was loaded.