Problem Decompiling Maps

So im wanting to decompile bm_crossfire.bsp using bspsource ive tried different methods of decompiling but every time i try open it in hammer it either closes hammer after the progress bar reaches 100% or it hammer opens up and you can see a lil bit of the map in the view screen but stop responding any ideas on what i should do or what other decompiler i should use?

You can try my modified version of BSPSource which has a fix for this issue. See this post.

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.