Had the same issue today. Reinstalled package control:
- Deleted Package Control folder inside the Sublime Text 3 > Packages folder
- went to https://sublime.wbond.net/installation and executed the manual installation instructions there
…namely
- Click the Preferences > Browse Packages… menu
- Browse up a folder and then into the Installed Packages/ folder
- Download Package Control.sublime-package and copy it into the Installed Packages/ directory
- Restart Sublime Text
Worked like charm!