catchable error when using Autoblogged??

I keep getting the following error when i try to grab a feed using autoblogged. I've been having other problems with certain content generating wp plugins (cc and UAW) and i'm not sure if this is due to the plugins, or my hosting? One of my hosts right now, the one that i'm experiencing these problems with is Dreamhost, with whom I have a shared account.

The error I'm referring to is this:

Catchable fatal error: Object of class WP_Error could not be converted to string in /home/blah blah blah domain/wp-includes/taxonomy.php on line 1393