In CS:S (orange box), there have not been any reported crashing issues with the map. There must be something different about the way Gmod interfaces with the bsp file. I guess it is time for me to finally buy Gmod and take a crash course in learning the game and how it works.
Hopefully there is someone else out there who has had a similar issue. There is lots of embedded content in the map so that might also be the cause. I'll keep you all updated on my progress.