Cannot use string offset as an array in Fundraising 2.1.1

I've just updated to the latest version of the Fundraising Plugin (2.1.1), and on trying to enter any new Fundraiser, I am getting the following message:

Fatal error: Cannot use string offset as an array in /home/northing/public_html/northings.com/wp-content/plugins/fundraising/fundraiser.php on line 977

I see something similar reported in a previous thread (https://premium.wpmudev.org/forums/topic/fundraising-20-rc-1-feedback). Was this ever fixed?

I'm running WP 3.3.1 and BuddyPress 1.5.5

Thanks
Marcus