[Plugin: Multiple content blocks] new version incompatible with older WP

I might have missed it but I didn’t see a note anywhere to warn people with WP 3.2.1 (or older) that they shouldn’t update to the new version of multiple-content-blocks (version 2.2 and up). The new wp_editor() (lovely by the way) isn’t available before WP3.3.
I rolled back to version 2.1, so no problem, but a heads up might be nice.

http://ww.wp.xz.cn/extend/plugins/multiple-content-blocks/