No Files in Browser

Hi.

I'm quite new to XBMC and have finally got it mostly working on my HP Microserver. One thing that isn't working is the webserver. I have enabled it and can get to the web page on another computer, however I only get a blank white screen with the buttons for Movies, Music, TV shows etc. When I click on one of these nothing really happens (the loading icon appears for half a second or so but the rest of the screen stays blank. The remote control feature is the only feature that does seem to work (have used it on both another computer and my phone).

I've tried searching the forums but no one else seems to of had this problem from what I can see.

When looking in the log file, the actions it lists when clicking on the movies are:

webserver: request received for /jsonrpc?PLayer.GetActivePlayers
JSONRPC: Incoming request: {"jsonrpc" : "2.0, "method": "Player.GetActivePlayers", "id":1}
JSONRPC: Calling player.getactiveplayers

Does anyone have any idea what the problem could be?

Edit: I should probably add, this happens in both the default web interface and AWXI