I tried doing what Muhsin and Truth said, but it still did not work.

Here are my map compiler settings:

v7.34
Light Calculations: low quality
Warnings: quiet
CPUs to be used: 2
Detail faces: none
Zoom-level: 1
Max level size: 56000
Tesselate shaded: 236
Tesselate flat: auto
Tellelate turbulence: auto

Lightmap ambient: 50%
Lightmap gamma: 1.50
Phong min angle: 120
Light compress at: 50%
Light limiting at: 196
Light scale: 0.50
Rad. subdivision: 255
Rad. bouncing: 0
Lightmap resolution: 8.00

Close when done: unchecked
Write logfile: unchecked
Create Meshes: checked
Create PVS: unchecked

Don't snap vertices: checked
Merge across leafs: checked
Solid sky: checked
Invisible==None: unchecked

Terrain lighting: checked
Lit maps only: checked
Use Tesselation: checked

Fat Hull offsets: 64 48 8
Narrow Hull offsets: 32 32 0

Command-line options: 'blank'

Any help in getting rid of this virtual memory error will be greatly appreciated. Thank you.