It appears that version 3.0 is a Leopard only version, which is hard to tell from the list of changes.
To get your old version back, visit the Objectpark Software and select the version appropriate to your OS version. At the center of the page is a box which reads:
Download
MenuCalendarClock
for Mac OS X version
10.5 – 10.4 – 10.3 – 10.2
Got my 2.7.5 back that way.
MenuCalendarClock for iCal
iCal-integrated menu bar calendar.
Version: 4.1.1
Version 3.0 is Leopard ONLY
Feedback Type: Troubleshooting Report
Contributed by: smalps Monday, October 29 2007 @ 06:50 PM PDT
Product Platform: MacOSX
Used Product For: Have Not Tried
System Info:
Version 3.0 is Leopard ONLY - ACBIV
Even 2.7.5 crashes for me now when I replace v3 with it.Reply to This
Tuesday, November 13 2007 @ 07:53 AM PST