Hi,
Your screenshot is showing "ZA DEL(Clone" GameObject, and your error mentions "chicken(clone)".
Can you double check on this and verify you are lookign at the right gameObject to solve this?
also, on a side note, make sure you disable the PlayMaker Pref "ErrorChecking/Check for Network Setup Errors", this is unrelated but will make the PlayMaker interface less confusing in the variables tabs.
Bye,
Jean