well, it should navigate to the page that contains the repository module, and it should also "filter" the repository to only show the item you clicked on in the dashboard module.  

So, for example, the expected functionality is that you click on an item in the dashboard, the page changes to the page with the associated repository module on it, and you should see ONLY the item you clicked on, at which point you should be able to interact with it, ie: download, comment, rate, etc.

One thing that could throw it off is if the item is assigned to a category that no longer exists.  Since the hierarchy of filtering in the repository module is Category->Item, the module, when being filtered first sets the category to one that the item belongs to, otherwise even though the item exists, if the category was set to one in which the item does not belong, it would not show.