we sometimes get this error in firefox and many customers too. what could the solution be our script looks like :
pvpDiagram = $$(go.Diagram, “Diagram”, {
SubGraphExpanded: function(e) {
try {
var groups = e.subject;
groups.each(function(g) {
if (g instanceof go.Group) {
pvpDiagram.model.setDataProperty(g.data, ‘SubGraphExpanded’, true);
}
})
} catch (ex) {
var place = "IPRO-CHART: SubGraphExpanded ";
ex.name = place + ex.name;
writeToLog(ex, 0, LOGLEVEL.ERROR);
}
},