last moment update - fix, was recursively triggering an update function....

scripts/addons/cam/__init__.py

@@ -195,8 +195,8 @@ def updateBridges(o,context):
 	
 def updateRest(o,context):
 	print('update rest ')
-	if o.use_layers:
-		o.parallel_step_back = False
+	#if o.use_layers:
+		#o.parallel_step_back = False
 	o.changed=True
 
 class camOperation(bpy.types.PropertyGroup):

scripts/addons/cam/ops.py

@@ -166,9 +166,12 @@ class CalculatePath(bpy.types.Operator):
 				return {'FINISHED'}
 		if o.computing:
 			return {'FINISHED'}
-			
+		
 		o.operator=self
 		
+		if o.use_layers:
+			o.parallel_step_back = False
+			
 		utils.getPath(context,o)
 		
 		return {'FINISHED'}