Well, there is always the obvious things to check for. Is the plugin script present on the server and if it is, is it in the correct location and being served up correctly.
An easy way to check is to visit your page using Chrome or Firefox and checking in the developer tools if the script is being loaded (in the Network tab).
Next up, still in the developer tools, check the Console tab so see if there are any JavaScript errors occurring, 1 small error can make an entire script (or site) fail, so it's definitely worth checking.
Let me know how you get on

Bookmarks