Ahhhh, the goold old days.  I remember that error, and still very occaisonally encounter it.  It means you are out of RAM and the render could not continue.  A few things to try.

Change the render settings, especially the indirect lighting settings.  Don't try to mak them all out adjust them for a reasonable quality output.   Make sure you aren't using too large bitmaps for your textures.  Huge texture map images suck a ton of memory when rendering.  Look to make sure you don't have any very complex objects interposing at any point.  The system will use a huge amount of RAM if it needs to compute the composed geometry AND light interaction AND texture(s) for that sort of joining. 

Without actually being anle to look at the file and the settings myself, that's about the best I can come up with generally.  I hope it helps.

Rich