diff -r 87cfa131b535 -r e7e0ae78773e configurationengine/source/plugins/example/ConeExamplePlugin/examplemlplugin/exampleml_impl.py
--- a/configurationengine/source/plugins/example/ConeExamplePlugin/examplemlplugin/exampleml_impl.py	Fri Mar 12 08:30:17 2010 +0200
+++ b/configurationengine/source/plugins/example/ConeExamplePlugin/examplemlplugin/exampleml_impl.py	Tue Aug 10 14:29:28 2010 +0300
@@ -39,7 +39,7 @@
     def generate(self, context=None):
         for output in self.output_objects:
             self.logger.debug("Generating '%s'" % output.get_output_file(self.output, self.configuration))
-            output.write_to_file(self.output, self.configuration)
+            output.write_to_file(self.output, context)
     
     def list_output_files(self):
         files = []
@@ -51,4 +51,8 @@
         refs = []
         for output in self.output_objects:
             refs.extend(output.get_refs())
+        # return None in case there are no refs in the implementations 
+        # to prevent filtering based on refs
+        if not refs:
+            refs = None
         return refs