How about uninstall KLAX 1.1 and answer yes to remove Addon Manager and Couatl during the uninstall process (which I didnot do when uninstalling KLAX 1.0) then install Addon Manager and KLAX 1.1. Any ideas?
Why are you keep wasting time reinstalling/uninstalling KLAX, when your previous message finally proven that KLAX didn't have anything to do with this, and yours is a video card/driver issue, as your screenshot of messed up textures at KTPA clearly indicates ?
Just to be clear: KLAX, Couatl and the Addon Manager don't have ANY effect on other scenery, they don't change ANY of the default FSX files, the ONLY modification they do to the FSX.CFG, is enabling 4096x4096 textures in the installation, but you can revert it easily with the Addon Manager (of course KLAX will look blurred)