If I combine "skinparam wrapWidth" with an OpenIcon in a rectangle I get an exception with "cannot parse result from dot/GraphViz" message.
Eg. following sample creates the exception
@startuml
skinparam wrapWidth 200
rectangle "Wifi <&wifi>" as wifi
@enduml
http://www.plantuml.com/plantuml/uml/SoWkIImgAStDuIhEpimhI2nAp5KeBqei2CzCASbGC38mu2fAJIv9p4lFILLG2izCorImKIi7KdPA2ed52Y0MbqDgNWhG0000