Reply with Quote and Inserting Smilies Issues, very weird

[BoostedK20]

I've had an issue where users have to click 'Reply with Quote' twice for it to work, because clicking once would give a 'loading' icon and never load anything. But users could always insert smilies without a problem once they're replying. However, if I change my Forum URL (Admin CP > Settings > Options > Site Name / URL / Contact Details) from "http://www.boostedk20.com/forums" to "http://www.boostedk20.com/" the Reply with Quote option works flawlessly in one click. However, once you click a smilie to insert it into the message it's unclickable. Mouse pointer doesn't change, and you can't click 'More' to view the popup with more smilies. Can someone help me out? Thanks