Can't use 2D Pose Estimate within rviz

Hey guys, i was trying to follow a turtlebot tutorial on how to navigate the robot within rviz. I can see the map in rviz and i can also send an goal and the robot will move to that goal. But i can't use the 2D Pose Estimate button. The message is correctly published on the "initialpose"-topic and the publisher and subscriber is also set correctly. But nothing happens! I get the following warning: Frame ID of "initialpose" (map) is different from the global frame /map What does this mean? The fixed frame in rviz is set to /map and the frame on which initialpose is working is also set to map... Any suggestions on my problem? Later i will do this on a real robotino, gut at the moment i have the same problem in the robotino as with the turtlebot in the simulator Best regards, Daniel