FIX: Wrong class name in exception message.  Thanks to Hanmac for noticing.
FIX: Wrong class name in exception message.  Thanks to Hanmac for noticing.

cbeck88/cegui-mirror-two,cbeck88/cegui-mirror-two,cbeck88/cegui-mirror-two,cbeck88/cegui-mirror-two,cbeck88/cegui-mirror-two