Doxygen 1.8.7 / GraphViz 2.38 compatabilty issue

Question

I recently upgraded from Doxygen 1.8.4 and GraphViz 2.36 where I had no problems generating graphs to Doxygen 1.8.7 and GraphViz 2.38 and cannot now get graphs.

During t

Answer 1

I had exactly the same problem using Doxygen 1.8.6 and dot 2.38 (20140413.2041). Only a slight version difference compared to OP but the same error messages - and no graphs. dot was (and is still) set in the PATH variable but this was not enough.

It was solved though after I explicitly set DOT_PATH to the appropriate directory which is "C:/Program Files (x86)/Graphviz2.38/bin" in my case.