having trouble

Black Mesa Archive Help!
#1

im having trouble launching black mesa every time i launch it it says it fails to find steam inter face if any one can help me please do > :frowning: :frowning:

#2

Try validating the Source SDK Base 2007 in the Tools section of Steam.

Library>Tools>Right-click Source SDK Base 2007>Properties>Local Files>Verify Integrity of Tool Cache

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.