"Parsing of xdot output failed" for valid DOT input

[Potherca]

When copy/pasting some valid DOT into the app, an "Parsing of xdot output failed" message occurred. Since it is not stated what the problem is, it is hard to make a smaller example to pinpoint the problem.

The DOT used is:

digraph ClassDiagram { 
#//////////////////////////////// Introduction \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
/*
    This graph is meant as a starting point to help you create UML Class 
    Diagrams by providing a preset for edges and nodes. 

    To use it, you need to take the folowing steps:

     - Copy and paste (or "save as") this graph into a new file
     - Rename the relevant labels (anything with the word "Example" in it).
     - Add nodes (inside subgraphs when needed)
     - Add connections for the nodes

    Make sure you place your connections under the right headers, otherwise the
    decoration won't match the UML specifications.

    For each module you should use a separate subgraph. Make sure the name of 
    your subgraph starts with `cluster_`

    If you don't like the colors, the easiest way to ammend this is by changing
    the defined colorscheme (currently "pastel13") in the "General Styles" 
    section to any other 3-scheme. All available colorschemes can be found at 
    http://www.graphviz.org/doc/info/colors.html#brewer
*/
#/////////////////////////////// General Styles \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
    graph [
        label = "Example \n Class Diagram"
        labelloc = t

        //dpi = 200
        ranksep=0.65
        nodesep=0.40
        rankdir=BT
        bgcolor="#FFFFDD"

        style="dotted, filled"
        fillcolor="#FFFFFF"
    ]

    edge [arrowhead=none]

    node [
        labeljust="l"
        colorscheme="pastel13"
        style=filled
        fillcolor=3
        shape=record
    ]

#/////////////////////////////////// Legend \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
    subgraph cluster_legend {
        label = "Legend"
        style="solid"
        ranksep=0.05
        nodesep=0.01
        labelloc = b
        len=0

        class [label="Class", fillcolor=3] 
        abstract [label="Abstract", fillcolor=2]
        interface [label="Interface", fillcolor=1]

        class -> abstract -> interface [style="invis"]
    }

#/////////////////////////// Sub Graphs and Clusters \\\\\\\\\\\\\\\\\\\\\\\\\\\
    subgraph cluster_ExampleModule {
        label = "Example Module"

        {// Interface
            node [style=filled, fillcolor=1]
            ExampleInterface [label="{«interface»\nExampleInterface|properties|methods}"]
        }

        {// Abstracts
            node [fillcolor=2]
            AbstractExample
        }

        // Concrete Classes
        ExampleFoo
        ExampleBar
        ExampleBaz
    }

#//////////////////////////////// Connections \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
    {// Implements
        edge [arrowhead=empty, style=dashed]
        AbstractExample -> ExampleInterface
        ExampleFoo -> AbstractExample
    }

    {// Extends
        edge [arrowhead=empty]

        // -------------------------------------------------------------------------
        ExampleBar -> ExampleFoo
    }

    {// Composits
        edge [arrowtail=diamond, arrowhead=none]
        ExampleBar -> ExampleBaz
    }

}//ClassDiagram

[mstefaniuk]

Fixed and available online.

[Potherca]

:+1: Awesome!