In Directory Opus 12.24 we have blocked the shell extension by default so you no longer have to.
- Added PDF-XChange Column Handler shell extension to the default blocklist, as it was causing delays reading the first folder after a reboot. This only affects the custom file display columns it added, which we don't think many people were using. Other PDF-XChange functionality, such as the Preview Handler, is unaffected.
If you need to unblock it, add {D8716A0E-4E9F-4D3F-BF1B-3460D86BB310} to Preferences / Miscellaneous / Advanced [Troubleshooting]: allow_context_menus