Sony Vegas 9.0 Error?

Im making the video for VM competition, and i cant render my video... at all. and it was just a test render. i wanted to see if the colors i made match the clip. ALL I PUT IN WAS THE MB colors... i get the error saying something like

not enough system memory. you can increase the memory by closing background applications...

this is dumb? all i had running was vegas, and im getting this for like the 20th time now. i got 4gb of ram.

and before u tell me, i tried running gamebooster, saving it onto the disk i installed vegas on, tried using the option, render using networked computers, i have 4 threads on and no limit on the RAM usage... this is ridiculous, its a damn 1:30 minute video... why the hell cant i render it... also i hvae the same fps settings in the render as in the project

anyone got a fix? i wanna submit my video and i cant even do this ****

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