Can't start BMS

Hey. When i try to start BMS i get black screen and very soon after it appears it closes. The game seemed to be working yesterday tho. Also it doesn’t produce any dump. Any ideas what can be wrong? I reinstalled SDK base and BMS itself, but still it won’t work.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’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.