Hello, I'm using the Baserock 16.13 chroot and tried to build trove-system-x86_64 of the reference system definitions. Morph produced this error: " 2016-04-27 10:53:53 Looking for uncommitted changes (pass --local-changes=ignore to skip) 2016-04-27 10:53:53 Creating temporary branch in /src/Workspace/definitions-master named refs/heads/baserock/builds/master/4fcbeb23acf241308a417dd26e9fa2ab 2016-04-27 10:53:54 Deciding on task order Traceback (most recent call last): File "/src/morph-master/cliapp/app.py", line 190, in _run self.process_args(args) File "/src/morph-master/morphlib/app.py", line 299, in process_args cliapp.Application.process_args(self, args) File "/src/morph-master/cliapp/app.py", line 539, in process_args method(args[1:]) File "/src/morph-master/morphlib/plugins/build_plugin.py", line 207, in build with source_pool_context as source_pool: File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__ return self.gen.next() File "/src/morph-master/morphlib/definitions_repo.py", line 199, in source_pool original_ref=original_ref, status_cb=status_cb) File "/src/morph-master/morphlib/sourceresolver.py", line 506, in create_source_pool definitions_original_ref=original_ref) File "/src/morph-master/morphlib/sourceresolver.py", line 440, in add_morphs_to_source_pool add_to_pool, predefined_split_rules) File "/src/morph-master/morphlib/sourceresolver.py", line 287, in _process_definitions_with_children morphology = get_morphology(filename) File "/src/morph-master/morphlib/sourceresolver.py", line 282, in get_morphology filename) File "/src/morph-master/morphlib/sourceresolver.py", line 255, in _get_morphology morph = morph_loader.load_from_string(text, filename) File "/src/morph-master/morphlib/morphloader.py", line 395, in load_from_string obj = yaml.safe_load(string) File "/usr/lib/python2.7/site-packages/yaml/__init__.py", line 93, in safe_load return load(stream, SafeLoader) File "/usr/lib/python2.7/site-packages/yaml/__init__.py", line 69, in load loader = Loader(stream) File "/usr/lib/python2.7/site-packages/yaml/loader.py", line 24, in __init__ Reader.__init__(self, stream) File "/usr/lib/python2.7/site-packages/yaml/reader.py", line 85, in __init__ self.determine_encoding() File "/usr/lib/python2.7/site-packages/yaml/reader.py", line 124, in determine_encoding self.update_raw() File "/usr/lib/python2.7/site-packages/yaml/reader.py", line 178, in update_raw data = self.stream.read(size) AttributeError: 'NoneType' object has no attribute 'read' " I tried updating morph and pylru to current the latest version in the git, but the problem persisted. Am I missing something here? Regards, Christoph