virtualbox.org

I have iMac 10.7.5. Virtual Box 4.1.8 r78361 runs Windows 6 and 7 well for past year or so. Startup window suggests updating to VB 4.2.6 but the downloaded .dmg file does not open, Reason: VirtualBox-4.2.6-8287 not recognized. What's wrong? Any reason I should fix what aint broke?
David

Moved to VirtualBox on Mac OS X Hosts.

If you have a working model and do not need any extras I would leave it alone. You can turn off the update notifier in the preference section.