Jarred wrote:I am running Windows 7, 32-bit
The problem may be here, does it happen with any scene (i.e. simple and complex) ? And with all rendering mode (i.e. normal, hybrid) ? AS written by LordCRC, try also to run LuxRender GUI alone without any other application running (i.e. close Blender).
You are very likely to run out of address space, especially if you run multiple applications (i.e Blender + Lux + etc.) at the same time.