dotty.lefty: giving up on dot
dotty.lefty: graph that causes dot
dotty.lefty: to fail has been saved in file dottybug.dot
dotty.lefty: please fill out a bug report at http://www.research.att.com/~erg/graphviz/bugform.html
Completely reproducable.
I guess that it is a problem with the amount of data, I think it does not happen with smaller files of the same structure.
Input file: b397.dot
Comments: [erg] One label has 5493 bytes, which upsets lefty's tummy.
Owner: *
Status: *