[EventCalendar] Calendar empty when previous or next month links chosen

[ejm]

This has already been addressed to a certain extent in the thread
entitled "Events not showing when month changes" started by  Angel
Justo:
http://penguin.firetree.net/pipermail/eventcalendar/2006-November/000992.html
However...

I am running wp2.0.5 with the default permalink structure. As far as I
know, I have not changed any of the redirects.  I have just now
upgraded from eventcalendar 3.1._pre11 to 3.1.0 (thanks, Alex, for
pointing out that the download link for the latest version of event
calendar is on the sidebar rather than in the announcement post
itself) 

The current month is showing everything correctly. However, when
previous or next months are chosen, the loading image spins round and
round and the calendar no longer shows any of the posts at all -
whether they are events or not. 

Not knowing a whole lot about coding, it looks to me as if something
might be up with the javascript. If javascript is disabled, everything
loads correctly. But when javascript is disabled, the link to the
previous month is javascript:ec3.go_prev() However, as the page is
loading, the links for the previous and next months appear to be
headed in the correct direction (October's link while the page is
loading is etherwork.net/blog/?m=200610 and then changes to
javascript:ec3.go_prev().)

But once the page has loaded, the link
The link to November when the page first loads is:
etherwork.net/blog/?m=200611 

With javascript enabled, if I go to October, the link for October is:
etherwork.net/blog/?year=2006&monthnum=10

and the link for September is 
javascript:ec3.go_prev()

I hope I have explained myself well enough. Any ideas on how to fix
this?

-E Morris (etherwork.net/blog/)

P.S. I am in the category of wp users who had to apply the Server 500
error fix to get wp2.0.5 to work correctly.
(markjaquith.wordpress.com/2006/10/28/some-wordpress-205-users-reporting-server-500-error/)
Could this have anything to do with the calendar problem?