Thanks. I think Peter is right. Has something to do with my Weather.DLL It works fine with original file, but when I update to Fs9.1 there is a problem. I will ask Peter if he can look at it. Thanks again.

Thanks for the advice on the 32 bit textures. I belive my main problem is with my updated (FS9.1) Weather.DLL, but when I use original DLL, and install Chris' 32bit cloud textures, things run a lot smoother.Thanks again.

The updated MS supplied weather.dll did not cause me a problem. Another user on the Reality-XP forum had a problem with his WX500 Radar and it turned out that another add-on had replaced the MS weather.dll. You might with Windows Explorer go to the Modules folder, right click on the weather.dll, choose properties, then version, and verify that it is the MS supplied one, version 9.01 something I believe.Just going back to Chris's 32-bit textures (making sure the DXT versions were removed) fixed it for me.

I solved the problem!!! I once replaced my original weather.dll file with another one. I now restored the old file and everything works fine again. I hope this helps some of you guys.regardsNicholas

Thanks for the update and your fix!Hope this helps,JimActiveSky Supporthttp://www.hifisim.com/images/as2004proudsupporter.jpg