Sasha:
I just tested mine and it runs fine. Does your Mach4 show its licensed properly? Im thinking your ID may be wrong.
I cant see anything on Darwins side that coudl do that. I suggest you check your Mach4 licnse and make sure its reporting good,
and if it is, contact M4 support, because it should be running and it should never give a -35 unless the license is bad.
Art