Can not create a map with gmapping

edit

Hello

Im trying to create a map from a bag file using the gmapping. I have done everything using the tutorial http://www.ros.org/wiki/slam_gmapping/Tutorials/MappingFromLoggedData but when I tried to save the map with the map server it was just waited for the map and nothing happened. My bag file has camera, imu and laser scans. The topics are imu/data and scan.

Here is my launch file

<launch>

<param name="/use_sim_time" value="true"/>

<node name="rosplay" pkg="rosbag" type="play" args="/home/2011-04-01-14-19-39.bag  --clock"/>


    <node pkg="tf" type="static_transform_publisher" name="baselink_laser" args="0 0 0 0 0 0 /scanmatcher_frame /laser 10"/>
    <node pkg="tf" type="static_transform_publisher" name="laser_imu" args="0 0 0 0 0 0 /laser /base_imu 10"/>


    <node pkg="gmapping" type="slam_gmapping" name="slam_gmapping" output="screen">
    <param name="base_frame" value="scanmatcher_frame"/>
        <param name="odom_frame" value="scanmatcher_frame"/>
    <param name="map_frame" value="map"/>

</node>

<!-- Start an rviz node with a custom configuration for the viewpoint, map_server, trajectory, laser scans, etc -->
<node pkg="rviz" type="rviz" output="screen" name="rviz" args="-d $(find pow_analyzer)/launch/pow_rviz.vcg"/>

</launch>

Any help