I have been using the NGX 8/900 without problems for awhile now, no CTDs, fatal errors etc.---Then, I added the 6/700 and the problems began.When I open FSX and load the 700, after about 30 seconds it turns to the infamous, "skeleton" and every other time I try to continue setting-up the free flight, I get a fatal error with the pop-up that I have run out of available memory. I have 488GB of available memory on the drive FSX is installed on, so I am not sure that is the issue.Also, I have received a few CTD's with the following report in the event viewer:Log Name: ApplicationSource: Application ErrorDate: 11/2/2011 6:57:32 AMEvent ID: 1000Task Category: (100)Level: ErrorKeywords: ClassicUser: N/AComputer: Owner-PCDescription:Faulting application name: fsx.exe, version: 10.0.61637.0, time stamp: 0x46fadb14Faulting module name: PMDG_737NGX.DLL, version: 1.0.0.0, time stamp: 0x4eaa4addException code: 0xc0000005Fault offset: 0x001fb7d2Faulting process id: 0xe50Faulting application start time: 0x01cc9954ea5371ccFaulting application path: D:\FSX\fsx.exeFaulting module path: D:\FSX\GAUGES\PMDG_737NGX.DLLReport Id: d866b9e6-0549-11e1-ade3-14dae903fbacEvent Xml:<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Application Error" /> <EventID Qualifiers="0">1000</EventID> <Level>2</Level> <Task>100</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2011-11-02T11:57:32.000000000Z" /> <EventRecordID>8558</EventRecordID> <Channel>Application</Channel> <Computer>Owner-PC</Computer> <Security /> </System> <EventData> <Data>fsx.exe</Data> <Data>10.0.61637.0</Data> <Data>46fadb14</Data> <Data>PMDG_737NGX.DLL</Data> <Data>1.0.0.0</Data> <Data>4eaa4add</Data> <Data>c0000005</Data> <Data>001fb7d2</Data> <Data>e50</Data> <Data>01cc9954ea5371cc</Data> <Data>D:\FSX\fsx.exe</Data> <Data>D:\FSX\GAUGES\PMDG_737NGX.DLL</Data> <Data>d866b9e6-0549-11e1-ade3-14dae903fbac</Data> </EventData></Event>fsx.exe 10.0.61637.0 46fadb14 PMDG_737NGX.DLL 1.0.0.0 4eaa4add c0000005 001fb7d2 e50 01cc9954ea5371cc D:\FSX\fsx.exe D:\FSX\GAUGES\PMDG_737NGX.DLL d866b9e6-0549-11e1-ade3-14dae903fbacI have uninstalled and reinstalled the 6/700 with a fresh download and the issues are still present. I installed both times with all firewalls and AV applications off, and I ran the installer as admin. I am sure that the fixes are simple, and any and all help would be greatly appreciated.A++ product for sure.John E. DeAngelisFort Worth, TX www.swavirtual.com