I'm running the current version. If I try to provide a list of np.arrays that contain the hirarchies, I get the following error: Traceback (most recent call last): File "/usr/local/lib/python3.5/dist-packages/IPython/core/interactiveshell.py", line 2847, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-104-5c3124f01cab>", line 2, in <module> gs[i], deg_corr=True, bs=asd, File "/usr/lib/python3/dist-packages/graph_tool/inference/minimize.py", line 503, in minimize_nested_blockmodel_dl base_type=type(min_state), UnboundLocalError: local variable 'min_state' referenced before assignment Basically, min_states is only defined if bs is None, in which case get_states() gets called. As soon as one provides bs, that breaks down. The reason I report this bug here is that I get the following error whenever I try to click on git or issues on the web: Misdirected Request The client needs a new connection for this request as the requested host name does not match the Server Name Indication (SNI) in use for this connection. -- View this message in context: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/... Sent from the Main discussion list for the graph-tool project mailing list archive at Nabble.com.