KATL not in airports list

[PilatusPilot32]

I purchased a new computer a few months ago, and I'm finally getting around to setting this game back up.  I've purchased and had working KATL and KATL Real Color in the past.

I've downloaded everything again and installed it (the program, real traffic, real color for the 3 base airports, KATL, and KATL real color), however KATL is not showing up in my Aiport Selection dropdown.  

I've installed Atlanta a few times and no luck.  Any suggestions?

Thanks in advance.

[EliGrim]

Did you change the path when installing the add-ons?

You may not have installed the game (or Steam if applicable) in the default Windows directory that the installers use pre-selected.

[PilatusPilot32]

These are just downloads (not steam) and I left all of the folders as the default.

[PilatusPilot32]

So now that I went and looked at the folder structure, the installer didn't ask me if I had PRO or not and it put it in the non-pro folder.  I reinstalled and put it in the pro folder and it seems to be working.

Thanks for your help.

[EliGrim]

A rights problem would also be possible. Already tried to run the setups as administrator?
A typo in the serial number may also cause problems. Have you tried to copy the serial number with Ctrl + C to the clipboard and then run the installer? The serial number should then be inserted automatically.

Edited July 13, 2019 by EliGrim
I was a bit slow with typing... Great that it works now!