Thread:Project:Support desk/Error: LightnCandy class not defined/reply (2)

Run  to get the latest dependencies or just use the latest official stable, which is built for "Upload-Install-Use". Actually you're using a development version, a pre-alpha if you want to call it so, which can be unstable (in some setups) and needs some more steps to setup. It's built for use on wmf wikis only. You can use it, but you need to know the risk and what to do if something doesn't work.