I just recently downloaded about 5 different aircraft for FS 2004 but the game now will not even run. It gets to the start-up page and just sits there, Before I downloaded the new aircraft I never had any problems. Please help! before I give up all together and delete the downloaded files.
If it worked before you installed the 5 aircraft then take them out (leave the folders on your desktop) and see if it runs.
If so then put them in one at a time until you see which is the bad guy.
If it doesn't start like it did before you loaded them in then we'll have to figure out why.
Try to remember if you put any gauges in the main gauge file also, not much you can do there.