I've installed the buildgraph-view-plugin, installed graphviz on the system and specified the correct path to it.

However the graph does not get visualized. If I download the graphviz code by clicking on "Graph in graphviz format" and paste it into http://www.webgraphviz.com/ , it doesn't produce any plot.

After playing a bit with it, it seems that the code generated includes a wrong "label" attribute for a few nodes.

"problematic job" [shape="Mrecord" href="" label=<<table border=0 cellborder=0 cellpadding=3 bgcolor=white><tr><td align=center >problematic job</td></tr></table>>];
edge[style="invisible",dir="none"];

As you can see the "label" parameter is not quoted properly. Moreover I think there are extra "<>".

I can not paste the original code, sorry about that.