HiI have been having the following problems since installing the 737NGX I have all my FSX settings to match those in PMDG's introduction and I have just changed the following line:"TEXTURE_MAX_LOAD_1024" to"TEXTURE_MAX_LOAD_4096"in my FSX config file also as per the instruction manual. I have previously added the "HIMEFIX=1" After doing this I firstly had problems with the 737NGX not showing in the window on the free flight page. I could not close FSX so I shut my computer down. When I restarted my computer I had a message saying that there was a problem with starting the operating system. I ran the repair window and waited. Once that was done I started FSX and chose the Trike free flight over Friday Harbour. Eventually (at least 10 mins) this flight loaded. I flew the Trike for about 20 secs; then closed the flight and FSX. I then rebooted my computer and started FSX and was able to load the NGX. I loaded the "long turn around" panel. Everything went fine and I took off and approx !0 mins into the flight my computer froze. I could not close FSX or shut my computer down. So I had to force a shut down. On restarting my computer I had the usual message saying that windows had not closed down properly and was I happy to restart windows. I pressed "any key" to continue and again had the message that there was a problem with Windows. It said that I should run a system restore so I chose a restore point just before I installed the NGX.I then decided to leave FSX alone for today. Tomorrow am going to try the same flight with my MD11X to see if I get the same problems.My concerns is why am I have had all the problems listed above.Finally I have just upgraded my computer with the following:i7-2600K o.c. to 4.2GHzGigabyte GA-Z68X-UD4-B3 mother board andCorsair H70 cooler.The rest of my system is 8Gb of Corsair DDR3 ram at 1666Hz(2 matched 4Gb sticks)Nividia 280 GTX 1Gb graphics card and a 750 corsair power supply.My OS is Win 7 64 bit Home Premium which was completely reinstaled when I upgraded. FSX was then reinstalled. This computer is only used for FSX and the only add-ons so far installed are: All of UK2000 scenery airports for FSX, Traffic X by Just Flight, FS Global 2008, ,Ulimate terrian X Europe and USA, Baleriac Islands Aerosoft. Flight Sim Commander 8 and ASE and PMDG's MD11X. I also have the Go Flight module installed for my throttles etc.Sorry to have included so much information but I hope it helps.

Hi, There seems to be a little mistake in the introduction. HIMEFIX=1 is wrong, it must be HIGHMEMFIX=1. Might thats your problem

Thanks John I have checked my FSX config file and itis "HIGHMEMFIX=1". I am surfing the net on my laptop and got the "HIGHEFIX" from the introduction.