I'm running Photo Mechanic version 5, build 13915 on an i5 iMac.
Was working till this morning - now won't open, respond, etc.
Was attempting a fresh uninstall/reinstall. But new install did not ask for registration, simply launches and continues to do nothing.
I suspect a faulty preference, but only pref I can find to delete in in Library/preferences.
Any others I should be looking for?