Sublime Text 2 - Package Control installed but the list not shown

Click the Preferences > Browse Packages and check whether Package control file is there or not.

You can manually put package control file there by downloading it from here and get rid of issues.

Take a look in your user Preferences.sublime-settings and remove the Package Control from the "ignored_packages" list if it is there.

If you use a Linux based system, you may have to check permissions of /home/user/.config/sublime-text-3. Check if the directory is owned by your user. If not, change the owner user for that directory.