How can that be? I keep running (on occasions) into an OOM while running WIN7 RTM x64 with 4GB. Everytime this happens taskmanager shows me a RAM usage of 1,96GB.So...it's the 2GB limit again. In XP there was a trick in the boot.ini to up the /userva, but in WIN7?Do I need to add the IncreaseUserVa in the BCD? Or do I need to add the /LargeAddressAware behind the fs9.exe command?

Or do I need to add the /LargeAddressAware behind the fs9.exe command?

Absolutely yes you do, you need to edit the fs9.exe and set the largeaddressaware flag with something like mentioned below in the quote , and there is no need to faff about with BCD, that's only needed for 32bit.The below is taken from another thread to get you on the right track

First download the explorer from http://www.ntcore.com/exsuite.phpNext make a copy from fs9.exe. Than start "CFF Explorer" and open the orginal fs9.exe file.Now go to NT Header/File Header and click File Header. There you find a button labeled "click here". Click it. And select the mark at "App can handle> 2gb adressest "Save the modified EXE, overwrite the orginal one (MAKE A BACKUP of the original file before you do the above).

Absolutely yes you do, you need to edit the fs9.exe and set the largeaddressaware flag with something like mentioned below in the quote , and there is no need to faff about with BCD, that's only needed for 32bit.The below is taken from another thread to get you on the right track</I>

Thanks Andy! Will give it a try this week.

darn...FS9 crashes as soon as I start it (after setting the "app can use >2gb" flag as descibed.

Try deleting the fs9.cfg file by renaming it, then fs9 will make a new one next time it starts.

No luck Andy. Changed the flag again, saved the file, deleted the cf9.cfg. Quite soon after starting FS9 (after a couple of seconds) it stops working (and also tells me so :( )And according to taskmgr, my RAM was used up to 2,8GB

Sorry I don't know what else to suggest, I had no problem with it, it just worked for me.

do you still start fs from CD? I do...maybe that's got something to do with it?

No my FS9 version is OEM which doesn't require a disk.

Interesting...after messing up my FS9, I started to re-install FS9. And you know what Andy? Somewhere along the line the 2gb flag doesn't work anymore.Am trying to figure out when it stops working. Untill know, FS (with the flag set) the FS 9.1 update nor PMDG MD-11 interferes...so...I'll have to continue installing my AI and mesh.

So far I've found out that the bglman.* files, installed when installing Cloud9 EHAM, will result in a crashing FS. Will try with a new Cloud9 toolkit to get the latest bglman files.

Woohoo :( The >2gb fix in fs9.exe did work Andy!3.17Gb RAM in use, both CPU's working for FS9 (had to turn off 1 CPU in taskmgr and then turn it on again to get both CPU's working).Running FS9, FSGlobal2008, UT Europe, MD-11, ASA, RealEnvironment Pro, RC4, VRinsight MCP combo, GF-TQ6 & GF-T8 ... all on 1920x1200 @32bit with almost everything at 100% and NO OOM! :( And the CTD was due to some bglman files from Cloud9. After fixing those with their new tool and copying them right over the originel ones, no more CTD.

Excellent news Eric glad you got it sorted.

Now I'm only trying to figure out if it's 'needed' to increase my RAM to 6GB or 8GB.Anyone any thoughts about that?

You wont see FS9 use any more memory that you mentioned previously so it would be a waste of time, the same is true of FSX because both apps are still 32bit programs at the end of the day.