If you get a pop-up message with a System.InvalidOperationException on
starting Duplicate Cleaner (or TextCrawler) you may have a damaged font file on your
computer. Check to see if the message mentions a font type - e.g.
Arial.
To repair the font (assuming font type of Arial):
- From the start menu find the 'Run' command, or type 'run' into the search box.
- Enter the filename c:\windows\fonts\arial.ttf (assuming your system drive is c:)
- Click install on the window that appears to re-install the font.