autoblogs not pulling feed

I posted this issue on 12-04 and haven't had a response - it seems to be related to my autoblog which also will not pull feed, even though no errors occur when I process feed (it says its processed) ... what could be the problem and how do I fix this?

I've tried to stream a feed from one of my category feeds and I've got this error message:

RSS Error: XML error: Reserved XML Name at line 2, column 38

What does it mean? What do I do to fix it?
My site is: ww3.homescholhub.co.za
can see error here: http://ww3.homeschoolhub.co.za/category/recommendations/ - bottom right sidebar
I put the feed in as: http://ww3.homeschoolhub.co.za/category/recommendations/advertorials/feed/