Pav Bike Store Theme Megamenu

Hi, I'm using OC v1.5.6 and am currently configuring the above titled theme for my site. The problem I'm having at present is that I have configured the main and sub categories in the Pav Megmenu module with no problem but, when I go to the store front to view the various categories it says they do not exist when I click on the links plus, there does not seem to be any autofill coming up when trying to link the products with the new megamenu categories.

Does anyone else use this theme and have any idea of where I may be going wrong please? I've tried to find a comprehensive instruction sheet regarding this theme but, don't seem to be able to get hold of one at present. The users guide page is quite arbitrary and basic.

Thanks in advance for any help.

Sorry, just realised that I've put this in the OC 2.0 area instead of the 1.5x