Layered navigation headers showing, but no sub categories or price ranges

I'm struggling with an odd one. I see the Layered Navigation headers Category, Price, etc... But no clickable sub options, even though I can see products that fall i开发者_运维知识库nto each right in front of me.

I have a category called Projectors with two sub categories called Red and Blue. Projectors is an anchor and has no products of its own. Red and Blue have products assigned to them and both categories appear in the drop down navigation at the top.

When navigating to Projectors, you see all of the sub products and the layered navigation headers, but no sub categories or price brackets. What am I doing wrong?

Rich

A Dropbox conflict had emptied a number of key template files, including template/catalog/layer/filter.phtml as @Ivan Chepurnyi suggested. Serves me right for not using proper source control on this project.