Check for keyframes before applying pose

common.py

@@ -62,6 +62,17 @@ def createFcurve(context, bone_name, transform, index_int):
         pass
 
 
+def findKeyframe(context, bone, active_frame):
+    arm_object, pose_library = getArmatureData(context)
+
+    for fcu in pose_library.fcurves:
+        if fcu.data_path.startswith('pose.bones["'+bone.name+'"]'):
+            for kp in fcu.keyframe_points:
+                if kp.co.x == active_frame:
+                    return fcu.data_path
+
+
+
 def createKeyframe(context, bone_name, transform, index_int, new_marker, loc):
     arm_object, pose_library = getArmatureData(context)
     pose_markers = pose_library.pose_markers
@@ -149,6 +160,9 @@ def setBonesfromKeyframes(context, arm_object, active_marker):
         if bone.bone.select or none_selected == True:
             bone_name = bone.name
 
+            if findKeyframe(context, bone, active_marker.frame) is None:
+                continue
+
             if bone.rotation_mode == "XYZ":
                 rot_mode = "rotation_euler"
             elif bone.rotation_mode == "YZX":