18 months ago Google decided a zip on my web site contained a nasty and placed the page on it's blacklist used by other browsers as well to stop the page being displayed, not quite the same blocking as you, but probably the same false detection. That page had about 30 zips, OpenSSL binaries, lots of Delphi source and a couple of EXE samples, Google never told me which file.
The answer is to stop Google scanning your files so they can not find false nasties. robots.txt might work, but they can ignore that, my solution was to move all the files onto a password protected web page that Google can not access, and that has worked. It's a pain for users to request the password, but over 1,000 Delphi developers have done so already, hopefully not including anyone from Google.
Angus