calendar won't display future months when in Explorer

Hi there, I have been using your events calendar for a few months and all is going well, however I have noticed that when I open my pages in internet explorer 8, the calendar will not search for events prior to or past the current month. I know there are events in September 2013, but can’t get past July 2013.

my site is http://www.investinginquality.ca

Thanks for you help.

http://wordpress.org/plugins/the-events-calendar/