I don't know what is going on if Google has the power to blacklist individual files. Seems peculiar.
BlackBird's site does not appear to be hosted by Google.
I do not (read never) use Google's DNS.
Google was not used to search for the program.
Google was not a referrer for the page request.
Google did not have Jack Shit to do with anything even vaguely tangentially related to the electronic communication between me an BB's website ... So if Google managed to block that download we have some epically Orwellian Big Brother class serious shit hitting the fan.
(That was fun) But seriously, I don't think Google is involved in the errors we're getting.