I don't post here a lot, I tend to come in look around and skeedaddle back to SOH. I aim on rectifying this. I've been simming MSFS since '94. Re the thread, I seem to have (touching wood) solved my OOM issues I was having by using the revised file. I never ever had an OOM with w7 32, then I upped to W7 64, and with FSX Accel and GE, UT, U traffic2, Orbx. Rex and any complicated a/c like a PMDG I was getting them. Now after 1 month of testing and deliberately changing views quickly, I seem to have eradicated the OOM issues. I post this in case any one else is contemplating the experiment. Just make sure you backup the original file.