Layers Not Displaying in Layer Panel

I am having an issue where my layer panel is blank, not displaying any of my layers. I have tried closing the panel and reopening it and I have also tried different files but have been unable to fix the issue. Has anyone else encountered this problem or does anyone have an idea for a fix? Thanks!

Hi Evan- try right clicking on the layer list header, just below the icons at the top and see if any of the available columns is checked.

-pascal

Thanks Pascal, that was the problem - for some reason Rhino was opening with all of the columns unchecked.