as far as i know, there aren't any legitimate uses of vanilla objects that generate error messages. I have a pretty huge project, and the only thing i get in the console is:
expr, expr~, fexpr~ version 0.4 under GNU Lesser General Public License
...and even that is just for a gui thing that doesn't go into the final libpd release.
But when i used to use pd-extended and its objects, i often got unavoidable warnings - stuff like "xxxx is not compatible with Windows" or whatever...whether you would consider the warning a bug, or the incompatibility a bug, is not something i can answer.
what errors are you getting Liam? and with what objects? there very well could be a tidy way to avoid them.