This solution is for ArcGIS 9.3 Happens because 32 bit apps are not allowed to use more than 2 gb of RAM. Here the step by step solution: 1. Install Microsoft Visual Studio 2008 (we need its command prompt to Unlock the 2 gb Limit form ArcMap) 2. Go to start menu and run the command prompt from the Visual Studio Folder. 3. Type, editbin /largeaddressaware "c:\program files (x86)\arcgis\bin\arcmap.exe" 4. ArcMap should not be running. 5. This should remove the error. for any problems email me at me_faizananwar at yahoo.com
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