I resolved the last problem (now I only have the 2 first errors in Error
log) writing in the file ElementImpl.java, in the method getActionName():
try{
return this.getAction().getName();
}catch (Exception e){
return actionName;
}
but now the label of actionName only updates when I restart the .diagram
instance. When I change the value of Action Reference, the value of the
ActionName label is the same until I restart the instance.
How can I do to update automatically the label without restarting the
diagram instance?