Gray buildings, and jetways

[Delta763]

I'm running FS9, and I've downloaded KFLL and tried to install. I keep getting the same results. Gray buildings, and jetways while it's in trial mode. Once I activate it, the buildings just plain disappear, and the jetways stay, but are still gray.
I have tried uninstall twice, and it's the same result each time. I also have made sure that before I start the install, that I disable the firewall. Any help is greatly appreciated!

[virtuali]

Are you sure you downloaded the full installer, and not the update ? Also, check you don't have Autogen set to zero, because it might cause problems with objects disappearing.

[Delta763]

Autogen is set to dense. I made sure that I had the full download, and didn't confuse it with the update download. Still not working right!

[virtuali]

I'm sorry, but the only possible explanation then, is there's a problem with graphic memory. You might have too many addons installed and exhausted or corrupted VRAM.

Try to lower the Max Texture size slider one notch.