OGRE Exception

[repa1030]

Hello,

I successfully run the example and also a custom lanelet map and visualized them in RVIZ but as soon as I add some other objects to RVIZ and saved the config, I receive an error during the next start.

The error that I received from RVIZ:
Error during map element creation: OGRE EXCEPTION(4:ItemIdentityException): An object of type 'ManualObject' with name 'llet_object_0' already exists. in SceneManager::createMovableObject at /build/ogre-1.9-kiU5_5/ogre-1.9-1.9.0+dfsg1/OgreMain/src/OgreSceneManager.cpp (line 6829)

I changed nothing in the LaneletMapPlugin object in RVIZ, just added some marker arrays.
Thank you for your help.

[repa1030]

EDIT: This error also occurs if I am just changing the window size of RVIZ and save the config. Setup: Ubuntu 20.04, ROS Noetic

git diff output:

@@ -8,7 +8,7 @@ Panels:
         - /LaneletMapPlugin1
         - /LaneletMapPlugin1/Visibility of Map1
       Splitter Ratio: 0.5
-    Tree Height: 565
+    Tree Height: 549
   - Class: rviz/Selection
     Name: Selection
   - Class: rviz/Tool Properties
@@ -17,7 +17,7 @@ Panels:
       - /2D Nav Goal1
       - /Publish Point1
     Name: Tool Properties
-    Splitter Ratio: 0.588679016
+    Splitter Ratio: 0.5886790156364441
   - Class: rviz/Views
     Expanded:
       - /Current View1
@@ -29,6 +29,10 @@ Panels:
     Name: Time
     SyncMode: 0
     SyncSource: ""
+Preferences:
+  PromptSaveOnExit: true
+Toolbars:
+  toolButtonStyle: 2
 Visualization Manager:
   Class: ""
   Displays:
@@ -38,7 +42,7 @@ Visualization Manager:
       Color: 160; 160; 164
       Enabled: false
       Line Style:
-        Line Width: 0.0299999993
+        Line Width: 0.029999999329447746
         Value: Lines
       Name: Grid
       Normal Cell Count: 0
@@ -55,13 +59,26 @@ Visualization Manager:
       Name: LaneletMapPlugin
       Value: true
       Visibility of Map:
-        Linewidth: 0.300000012
-        Linewidth Separators: 0.300000012
-        Linewidth Stop Lines: 0.300000012
+        Border linewidth of Parking Areas: 0.30000001192092896
+        Border linewidth of non-Parking Areas: 1
+        Character Height: 1
+        Color Left Boundaries: 120; 120; 120
+        Color Parking Areas: 0; 85; 255
+        Color Right Boundaries: 120; 120; 120
+        Color Separators: 25; 75; 250
+        Color Stop Lines: 250; 10; 10
+        Color non-Parking Areas: 252; 175; 62
+        Fill out Parking Areas?: true
+        Fill out non-Parking Areas?: true
+        Linewidth Boundaries: 0.30000001192092896
+        Linewidth Separators: 0.30000001192092896
+        Linewidth Stop Lines: 0.30000001192092896
         Value: true
         Visibility of Lanelet Seperators: true
         Visibility of LaneletIds: true
+        Visibility of Parking Areas: true
         Visibility of Regulatory Elements (e.g. Stop Lines): true
+        Visibility of non-Parking Areas: true
   Enabled: true
   Global Options:
     Background Color: 48; 48; 48
@@ -77,7 +94,10 @@ Visualization Manager:
     - Class: rviz/FocusCamera
     - Class: rviz/Measure
     - Class: rviz/SetInitialPose
+      Theta std deviation: 0.2617993950843811
       Topic: /initialpose
+      X std deviation: 0.5
+      Y std deviation: 0.5
     - Class: rviz/SetGoal
       Topic: /move_base_simple/goal
     - Class: rviz/PublishPoint
@@ -87,25 +107,25 @@ Visualization Manager:
   Views:
     Current:
       Class: rviz/Orbit
-      Distance: 227.044769
+      Distance: 227.04476928710938
       Enable Stereo Rendering:
-        Stereo Eye Separation: 0.0599999987
+        Stereo Eye Separation: 0.05999999865889549
         Stereo Focal Distance: 1
         Swap Stereo Eyes: false
         Value: false
+      Field of View: 0.7853981852531433
       Focal Point:
-        X: 506.589172
-        Y: -1271.90332
+        X: 506.58917236328125
+        Y: -1271.9033203125
         Z: 0
       Focal Shape Fixed Size: false
-      Focal Shape Size: 0.0500000007
+      Focal Shape Size: 0.05000000074505806
       Invert Z Axis: false
+        Linewidth Separators: 0.30000001192092896
+        Linewidth Stop Lines: 0.30000001192092896
         Value: true
         Visibility of Lanelet Seperators: true
         Visibility of LaneletIds: true
+        Visibility of Parking Areas: true
         Visibility of Regulatory Elements (e.g. Stop Lines): true
+        Visibility of non-Parking Areas: true
   Enabled: true
   Global Options:
     Background Color: 48; 48; 48
@@ -77,7 +94,10 @@ Visualization Manager:
     - Class: rviz/FocusCamera
     - Class: rviz/Measure
     - Class: rviz/SetInitialPose
+      Theta std deviation: 0.2617993950843811
       Topic: /initialpose
+      X std deviation: 0.5
+      Y std deviation: 0.5
     - Class: rviz/SetGoal
       Topic: /move_base_simple/goal
     - Class: rviz/PublishPoint
@@ -87,25 +107,25 @@ Visualization Manager:
   Views:
     Current:
       Class: rviz/Orbit
-      Distance: 227.044769
+      Distance: 227.04476928710938
       Enable Stereo Rendering:
-        Stereo Eye Separation: 0.0599999987
+        Stereo Eye Separation: 0.05999999865889549
         Stereo Focal Distance: 1
         Swap Stereo Eyes: false
         Value: false
+      Field of View: 0.7853981852531433
       Focal Point:
-        X: 506.589172
-        Y: -1271.90332
+        X: 506.58917236328125
+        Y: -1271.9033203125
         Z: 0
       Focal Shape Fixed Size: false
-      Focal Shape Size: 0.0500000007
+      Focal Shape Size: 0.05000000074505806
       Invert Z Axis: false