I need to insert keyframe for the pose I have made in posemode. How can I do that? when I hit i it writes some error (keying set failed to set any keyframes or something like that)
Have you tried to select what type of keyframe you want to add? It is at the bottom just after the type of sync that you would like to keep while playing your animation. Or if you would not want to set a specific type of keyframe, please click on the red button on the left of type of keyframe.