Not loading rulesets from HTTPSEverywhereUserRules on Firefox 31.0 / OS X 10.9.4
HTTPS Everywhere 5.0 development 0, does not load rulesets from XML files in the HTTPSEverywhereUserRules subdirectory in the Firefox profile directory. The same for the latest stable version 3.5.3.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information