If Black Ink is not running and I download a Cruciverb.com puzzle, Black Ink starts, but starts frozen - i.e. force quit. The problem is that BI wants to present its "Web Puzzle Chooser" window (selected in Preferences) but this is somehow blocked by the puzzle.
The result is that you can move the selected entry with the tab and arrow keys, but not with the cursor (which only elicits a beep). The fix, of course, is to make sure BI is started first and dismiss that window, then go to Preferences>Startup and uncheck the box that shows the WPChooser.