Cortona3D Viewer uses computer memory to render your 3D scenes from VRML.
It is recommended that all running applications are closed before launching large VRML files in supported 32–bit internet browser.
On a 32–bit Operating System only 2GB segment of operative memory is available for every application.
To exeed this 2GB limit it is recommended to use 64–bit version of Cortona3D Viewer (can be downloaded here). 64–bit Cortona3D Viewer can only run on 64–bit Operating System (instructions to identify system type). If user's Operating System is 64–bit, large VRML files can be opened in 64–bit version of Internet Explorer (Start > All Programs > Internet Explorer (64-bit)).