GSX installation error FSX:SE

[Samppa]

When I try to install GSX I get "Internal Error:An attempt was made to expand the "app" constant before it was initialized.". About a week ago my brother deleted steam and installed it again. So fsx:se was deleted. I installed it to a different drive, and when I try to install, I get that error message. I read http://www.fsdreamteam.com/forum/index.php?topic=13985.0 . Didn't work. What should I do now?

[virtuali]

I can only confirm the problem can only be caused by a wrong registry key for FSX:SE, usually caused by having removed FSX manually after having installed FSX:SE when FSX was installed.

Please follow this thread, to the letter:

http://www.fsdreamteam.com/forum/index.php/topic,14166.msg104727.html#msg104727

[Samppa]

I went to registry keys and found that path was wrong even tho I used the program. After that I ran the program with administration rights and it worked. So the problem was actually my stupidness. Thanks anyway