@hugh Resurrecting this: the forum points to an issue on github (
https://github.com/wbond/package_control/issues/1612) that leads to a fix. It involves manually downloading and installing a pre-release version of Package Control to deal with an OpenSSL incompatibility. This approach worked for me on a couple of my systems where Package Control was non-functional. I ended up throwing away any previously installed packages and reinstalling them after grabbing the current pre-release of PC.