If you have problems with BK check this FAQ on how to solve them:
Currently includes:
What do I need to play Blitzkrieg?
When trying to join a game I get the error "Incompatible Version"
Where do those "$No Key" errors in the game come from?
Blitzkrieg won't start!
Blitzkrieg crashes!
Requires Adobe Acrobat Reader or another program capable of opening .PDF files!
Love the mod. But were is the FAQ?
found it thank you
with what i can open it
acrobat reader
Is this compatible with Steam game versions?
Yes it is, enjoy ;)
Love the mod good work