Error calling MoveAlongJointPath

I am getting the following error while calling MoveAlongJointPath
(move_along_joint_path: exception caught: Number of specified joints is -1935054056, nr) what does it mean,
I am setting at least 2 joints for movement but this happens. What does the nr in the end mean?

the error message indicates that the length of your joint_limits-field is different than the length of your joint_names-field in the move_along_joint_path()-service request.

(the actual number of the error message is invalid and only a bug in the string-formating which will be fixed in the next release)