I went back to version 0.84 and basically recreated that version as version 0.96. I do hope this fixes the bugs that are breaking people’s web sites. I have also applied to WordPress for a beta version of the plugin to be listed in the Plugin Directory. That way I can test new versions on many different sites more easily, without breaking everyone’s sites when I introduce a bug. Thank you for your patience.
Version 0.96 should appear in your admin panel soon, or you can download it form the WP Plugin Directory: Ultimate Category Excluder.