Unable to complete graph layout using DOT

[bill.raynor]

Hello,
I attempted to use DOT to layout a graph and recieved the mesage:
Unable to complete graph layout using DOT
String index out of range: -27
using internal algorithm

I am using HUGIN Developer 7.5 and Graphviz 2.28.
The path to the dot executable is C:\Program Files (x86)\Graphviz 2.28\bin\dot.exe

How do I fix this error?

Bill
added after initial post:
I tried this with a different network. Not only did it fail (same error, different index) it tried to send in a bug report. That failed, too with an i/o error.

[Martin]

Dear Bill

Thanks for reporting this problem. There is indeed a problem with the dot interfacing code. We are working on a solution.