Error in Media Manager - Joomla! Forum - community, help and support

hello,
i keep seeing following error @ top of media manager:
notice: undefined property: jobject::$introtext in /home1/rapidtec/public_html/plugins/content/fb_tw_plus1/fb_tw_plus1.php on line 1031

any error appreciated, since beginner.
thanks,
frank

the image bit small, , can't read path well, content plugin causing error. if wrote it, need investigate. if not, try developer, see if have date version, or if have information error.