Well if you haven't tried lowering your graphics settings, you should do so. A map that works fine in the map maker might be the bane of your existance in-game. Also... I believe your RAM is the DDR3, your hard drive couldn't fit the OS if it was just a GB.
Tested the map, and it's not loading here either, it seems. What's interesting is this:
terminate called after throwing an instance of 'Ogre::FileNotFoundException'
what(): OGRE EXCEPTION(6:FileNotFoundException): Cannot locate resource drekmulticastfader.png in resource group Temp/exports/Drek Particles.fho or any other group. in ResourceGroupManager::openResource at OgreMain/src/OgreResourceGroupManager.cpp (line 753)
abnormal program termination
It seems you have a missing particle file... This happened to me on my Cyberia map as I made the Pixel rain. I cleaned out exports, re-exported and it worked fine.