Hi All,

Reason for that is that the resource does not appear to be local(its a semantic file system based resource) , so file.getLocation() returns null.Hence NPE and DomainEditorBehaviour.setResourceChanged() is not called.

	
 IFile file = WorkspaceSynchronizer.getFile(r);
 if (file != null && (!file.exists() || 
    file.getLocation().toFile().lastModified() != r.getTimeStamp())) {
	deb.setResourceChanged(true);
	return true;
 }

Hi,

we check all files in the resource set, since the business objects might
have been stored in a different file.
The diagram needs to be notified if business objects in a seperate resource
in the same resource set
are modified from the outside.

I'd try changing the above to

  Resource r = iterator.next();
  IFile file = WorkspaceSynchronizer.getFile(r);
  try {
    if (file != null && (!file.exists() || file.getLocation().toFile().lastModified() != r.getTimeStamp())) {
       deb.setResourceChanged(true);
       return true;
      }
  } catch(Exception e) {
   if(r == resource) {
      deb.setResourceChanged(true);
      return true;
   }
 }