I notice several people asked this question already but no one has answered it at least in the pages i have read ( it's a long thread )

How do you stop your main page showing up when you click one of your product categories after installing this.

My main page shows up in all categories which have subcategories.

If the category doesn't have subcategories the main page doesn't show up and thats how i want it.

Someone suggested deleting a file but thats no use if you want to actually use the module.

So what is the fix for this issue ?