I've installed this plugin but can't get it working. Here's what happens:
When I press the "Count Pages" button on the toolbar, I get this message
"You must specify custom column(s) first. Do you want to configure this now?"
I click OK, and get the "Customize Count Pages" dialog. However I can't choose anything for Custom Column, or Readability Options. When I click on the dropdowns, they are blank
When I press OK nothing changes, but the dialog vanishes. Pressing the toolbar button brings up the same message and dialog over and over again.