Yes, I have been playing through many missions and once the weather 'fails' it will stay calm and no clouds (of course, only being playable once I have replaced the scene dat file in the data folder).
I determined it by trial and error, by going through all the files until I say which one caused the chop.
When I say I switched it, I took to scene dat file from eithor the 8km or 16km atmospere mod (depending on which I am using with GWX) and would overwrite the scene dat file in the data folder.
It seems that this is more than likely a matter of trying to run this mod on the laptop...........or is yet to be solved.....but I am curious if 'kpt. Kozloff' found a solution for the chop on his laptop.....
thanks!