Error: Motion Libary: Body and Limb IK Behaviors must be on the same layer. (but I have only 1?)

Hello,

A few days ago I started rigging a character drawing for an university project. But when I add a behavoiur to my puppet and go to Record, in the timeline an error warning is showing up: "Motion Libary: Body and Limb IK behaviors must be on the same layer." The puppet does not move or doing anything, altough I added behaviour from the libary.

I dont understand this because I only have one layer (png image with the drawing/ imported via Photoshop/ photoshop dat). Can anyone help? I need to make him idle,breathing ( for a roleplay game)