.

Pilz.Reflection.PluginSystem/PluginManager.vb

@@ -2,6 +2,12 @@
 
 Public Class PluginManager
 
+    ''' <summary>
+    ''' Gets or sets an indicator if an exception should throw on error while loading a plugin.
+    ''' </summary>
+    ''' <returns></returns>
+    Public Property ThrowOnError As Boolean = False
+
     ''' <summary>
     ''' The name of the type where to search for Methods when loading a new Plugin.
     ''' </summary>
@@ -79,7 +85,11 @@ Public Class PluginManager
             If addToList Then Plugins.Add(filePath, plugin)
             Return plugin
         Catch ex As Exception
+            If ThrowOnError Then
+                Throw
+            Else
                 Return Nothing
+            End If
         End Try
     End Function
 

Pilz.UI/PaintingControl/PaintingControl.vb

@@ -314,7 +314,7 @@ Public Class PaintingControl
 
     Private Sub SaveObjectPositions(e As MouseEventArgs, objs As IList)
         For Each obj As PaintingObject In objs
-            If Not savedPos.ContainsKey(obj) Then
+            If Not obj.HardcodedLocation AndAlso Not savedPos.ContainsKey(obj) Then
                 savedPos.Add(obj, New PointF(e.X - obj.Location.X + Offset.X, e.Y - obj.Location.Y + Offset.Y))
                 SaveObjectPositions(e, obj.PinnedObjects)
             End If

Pilz.UI/PaintingControl/PaintingObject.vb

@@ -42,7 +42,8 @@ Imports Newtonsoft.Json
     <JsonIgnore> Public Property BufferedImage As Image = Nothing
     Public Property ImageSizeMode As ImageSizeMode
     Public Property ImageProperties As New PaintingObjectImageProperties
-    Public Property Tag As String = Nothing
+    <JsonIgnore>
+    Public Property Tag As Object = Nothing
     Public Property Name As String = ""
     Public ReadOnly Property PinnedObjects As New List(Of PaintingObject)
     <JsonIgnore>
@@ -51,6 +52,7 @@ Imports Newtonsoft.Json
     Public ReadOnly Property DrawSelectionMethode As DelegateDrawPaintingObjectMethode = AddressOf DefaultDrawMethodes.DrawSelection
     Public Property Cursor As Cursor = Cursors.Default
     Public Property HardcodedSize As Boolean = False
+    Public Property HardcodedLocation As Boolean = False
     <JsonProperty>
     Private _Visible As Boolean = True
     <JsonProperty>
@@ -421,6 +423,20 @@ Imports Newtonsoft.Json
         End Set
     End Property
 
+    <JsonProperty(NameOf(Tag))>
+    Public Property TagString As String
+        Get
+            If TypeOf Tag Is String Then
+                Return Tag
+            Else
+                Return String.Empty
+            End If
+        End Get
+        Set(value As String)
+            Tag = value
+        End Set
+    End Property
+
     Public Property EnableResize As Boolean
         Get
             If resizeEngine Is Nothing Then