Game crashes after activating silo fan.

Hello. For some reason, the game crashes just after I activate the giant fan inside the silo. Even after turning all the settings as low as I could, it still crashes mere seconds after activating the fan. I have attached the MDMP file, As requested in one of the pinned topics. If you need any more information, such as my computer specifications, I would be happy to give any more info needed to help fix this issue. Any help is appreciated.

Thank you in advance.
hl2_3943_crash_2013_9_29T22_39_8C0.mdmp (75.8 KB)

Known issue.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valveā€™s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.