dot -Tps maingraph.dot > maingraph.ps |& tee maingraph.out
This is on a Linux machines, running either Red Hat Enterprise Linux 3 (CPU: 32bit) or Red Hat enterprise Linux 4 (CPU: 64bit).
Looking at the source, I've found the issue to be revealed in ns.c, but I can't delve into why there ctr != N_nodes.
The maingraph.dot is generated automatically, and it may have syntactic issues, but the parsing completed with no errors on my side, as you can see from the annexed .out, obtained with rhel4.
Input file: b1224.dot
Output file: b1224.txt
Comments: [erg] Yet another "trouble in init_rank" bug.