Problems with hector_slam Tutorials MappingUsingLoggedData

I am trying to run : hector_slam Tutorials MappingUsingLoggedData with Hydro. After I launch everything, I don't get any thing on Rviz. Here is the warning that I am getting: [ INFO] [1414325137.230751975]: Geotiff node started [ WARN] [1414325156.252540097]: No transform between frames /map and scanmatcher_frame available after 20.003600 seconds of waiting. This warning only prints once. [ INFO] [1414325181.258100206, 1310297993.109858243]: Finished waiting for tf, waited 45.009179 seconds SearchDir angle change too large SearchDir angle change too large SearchDir angle change too large SearchDir angle change too large