"Custom property used as component description" is hidden

I am trying to change the component description to a custom property called "Title", but the drop down box seems to be hidden. I have the correct file location for my "Custom Property Files" and I have not altered the properties.txt file at all. I have tried to move it to new locations, but that does not seem to work. I have also reset my options, but that does not seem to work either. Has anyone else had this issue before? Thanks in advance.

SolidworksGeneral