Hallo, As the title says, Iam just trying to publish cmd_vel from those two nodes. They dont give me Errors, but rostopic echo gives me "WARNING: no messages received and simulated time is active. Is /clock being published?

The receiving node doesnt get anything, as said "rostopic echo" doesnt get anything either, but both two nodes "seem" to run fine (one at a time of course). It worked well until just now, and nothing really big has changed, that had anything to do with publishing either clock nor cmd_vel. Any Ideas what could be going on / blocking, hindering?

checked:

• right topic
• clock is publishing (right topic again)

thanks