When I received the Logos4Mac,dmg update / download from Logos today - it ask me what application do I want to use to open it and then download it? I've tried all my applications but none open the download. What do you suggest?
What version of Mac OS X are you on?
Normally, double clicking the file will simply open a window with the Logos Bible Software 4 application inside.
You can always try to redownload the latest version from http://www.logos.com/logos4mac