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Prevent spawned robot model from moving

Hi, I want to control the robot model that I spawned using spawn_model script, but after spawning it starts to rotate slightly, and I think this causes problems with Moveit package, because when I try to execute planned path I get this error:

[ERROR] [1507023800.853643333, 2796.811000000]: 
Invalid Trajectory: start point deviates from current robot state more than 0.01
joint 'Kuka_kr3__base_revolute': expected: -0.441804, current: -0.420193


How can I stop such movement?