Rviz Error - Dropped 100.00% of messages so far. [closed]

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enter code hereI am using ROS Electric, and when I add the NXTULTRASONICDISPLAY and NXTCOLORDISPLAY in Rviz, the terminal outputs:

[ WARN] [1428430767.098592506]: Message from [/nxt_ros] has a non-fully-qualified frame_id [r_ultrasonic_link]. Resolved locally to [/r_ultrasonic_link].  This is will likely not work in multi-robot systems.  This message will only print once.
[ WARN] [1428430767.099069103]: Message from [/nxt_ros] has a non-fully-qualified frame_id [l_intensity_link]. Resolved locally to [/l_intensity_link].  This is will likely not work in multi-robot systems.  This message will only print once.
[ WARN] [1428430782.123835606]: MessageFilter [target=/ref_0_link ]: Dropped 100.00% of messages so far. Please turn the [ros.nxt_rviz_plugin.message_notifier] rosconsole logger to DEBUG for more information.

I have no idea what to do. I'm fairly new to ROS so please be specific and explicit when giving instructions. Thanks!