diff --git a/plugins/3MFReader/ThreeMFReader.py b/plugins/3MFReader/ThreeMFReader.py
index 9eec09b202..2ecea82691 100755
--- a/plugins/3MFReader/ThreeMFReader.py
+++ b/plugins/3MFReader/ThreeMFReader.py
@@ -44,8 +44,8 @@ except ImportError:
 
 ##    Base implementation for reading 3MF files. Has no support for textures. Only loads meshes!
 class ThreeMFReader(MeshReader):
-    def __init__(self):
-        super().__init__()
+    def __init__(self, application):
+        super().__init__(application)
         self._supported_extensions = [".3mf"]
         self._root = None
         self._base_name = ""
@@ -158,7 +158,7 @@ class ThreeMFReader(MeshReader):
             um_node.addDecorator(sliceable_decorator)
         return um_node
 
-    def read(self, file_name):
+    def _read(self, file_name):
         result = []
         self._object_count = 0  # Used to name objects as there is no node name yet.
         # The base object of 3mf is a zipped archive.
diff --git a/plugins/3MFReader/__init__.py b/plugins/3MFReader/__init__.py
index 9da54586a3..ddaf76e01e 100644
--- a/plugins/3MFReader/__init__.py
+++ b/plugins/3MFReader/__init__.py
@@ -42,7 +42,7 @@ def getMetaData() -> Dict:
 
 def register(app):
     if "3MFReader.ThreeMFReader" in sys.modules:
-        return {"mesh_reader": ThreeMFReader.ThreeMFReader(),
+        return {"mesh_reader": ThreeMFReader.ThreeMFReader(app),
                 "workspace_reader": ThreeMFWorkspaceReader.ThreeMFWorkspaceReader()}
     else:
         return {}
diff --git a/plugins/GCodeGzReader/GCodeGzReader.py b/plugins/GCodeGzReader/GCodeGzReader.py
index 86c0af89a2..7a6a76d4a5 100644
--- a/plugins/GCodeGzReader/GCodeGzReader.py
+++ b/plugins/GCodeGzReader/GCodeGzReader.py
@@ -12,11 +12,11 @@ from UM.PluginRegistry import PluginRegistry
 #   If you're zipping g-code, you might as well use gzip!
 class GCodeGzReader(MeshReader):
 
-    def __init__(self):
-        super().__init__()
+    def __init__(self, application):
+        super().__init__(application)
         self._supported_extensions = [".gcode.gz"]
 
-    def read(self, file_name):
+    def _read(self, file_name):
         with open(file_name, "rb") as file:
             file_data = file.read()
         uncompressed_gcode = gzip.decompress(file_data).decode("utf-8")
diff --git a/plugins/GCodeGzReader/__init__.py b/plugins/GCodeGzReader/__init__.py
index 6e720b1ed1..e6bae6615e 100644
--- a/plugins/GCodeGzReader/__init__.py
+++ b/plugins/GCodeGzReader/__init__.py
@@ -21,4 +21,4 @@ def getMetaData():
 
 def register(app):
     app.addNonSliceableExtension(".gz")
-    return { "mesh_reader": GCodeGzReader.GCodeGzReader() }
+    return { "mesh_reader": GCodeGzReader.GCodeGzReader(app) }
diff --git a/plugins/GCodeReader/GCodeReader.py b/plugins/GCodeReader/GCodeReader.py
index a576d6b49f..c51fc9c8a7 100755
--- a/plugins/GCodeReader/GCodeReader.py
+++ b/plugins/GCodeReader/GCodeReader.py
@@ -27,8 +27,8 @@ class GCodeReader(MeshReader):
     _flavor_readers_dict = {"RepRap" : RepRapFlavorParser.RepRapFlavorParser(),
                             "Marlin" : MarlinFlavorParser.MarlinFlavorParser()}
 
-    def __init__(self):
-        super(GCodeReader, self).__init__()
+    def __init__(self, application):
+        super(GCodeReader, self).__init__(application)
         self._supported_extensions = [".gcode", ".g"]
         self._flavor_reader = None
 
@@ -57,7 +57,7 @@ class GCodeReader(MeshReader):
     def readFromStream(self, stream):
         return self._flavor_reader.processGCodeStream(stream)
 
-    def read(self, file_name):
+    def _read(self, file_name):
         with open(file_name, "r", encoding = "utf-8") as file:
             file_data = file.read()
         return self.readFromStream(file_data)
diff --git a/plugins/GCodeReader/__init__.py b/plugins/GCodeReader/__init__.py
index 999dd37a37..399de8a90e 100644
--- a/plugins/GCodeReader/__init__.py
+++ b/plugins/GCodeReader/__init__.py
@@ -23,4 +23,4 @@ def getMetaData():
 def register(app):
     app.addNonSliceableExtension(".gcode")
     app.addNonSliceableExtension(".g")
-    return { "mesh_reader": GCodeReader.GCodeReader() }
+    return { "mesh_reader": GCodeReader.GCodeReader(app) }
diff --git a/plugins/ImageReader/ImageReader.py b/plugins/ImageReader/ImageReader.py
index 3a98abccf5..89f163cfca 100644
--- a/plugins/ImageReader/ImageReader.py
+++ b/plugins/ImageReader/ImageReader.py
@@ -17,8 +17,8 @@ from cura.Scene.CuraSceneNode import CuraSceneNode as SceneNode
 
 
 class ImageReader(MeshReader):
-    def __init__(self):
-        super(ImageReader, self).__init__()
+    def __init__(self, application):
+        super(ImageReader, self).__init__(application)
         self._supported_extensions = [".jpg", ".jpeg", ".bmp", ".gif", ".png"]
         self._ui = ImageReaderUI(self)
 
@@ -44,7 +44,7 @@ class ImageReader(MeshReader):
             return MeshReader.PreReadResult.cancelled
         return MeshReader.PreReadResult.accepted
 
-    def read(self, file_name):
+    def _read(self, file_name):
         size = max(self._ui.getWidth(), self._ui.getDepth())
         return self._generateSceneNode(file_name, size, self._ui.peak_height, self._ui.base_height, self._ui.smoothing, 512, self._ui.image_color_invert)
 
diff --git a/plugins/ImageReader/__init__.py b/plugins/ImageReader/__init__.py
index ea6ff8cceb..f30fdb83b0 100644
--- a/plugins/ImageReader/__init__.py
+++ b/plugins/ImageReader/__init__.py
@@ -33,4 +33,4 @@ def getMetaData():
     }
 
 def register(app):
-    return { "mesh_reader": ImageReader.ImageReader() }
+    return { "mesh_reader": ImageReader.ImageReader(app) }
diff --git a/plugins/X3DReader/X3DReader.py b/plugins/X3DReader/X3DReader.py
index b0b9e00a5b..e57ec524db 100644
--- a/plugins/X3DReader/X3DReader.py
+++ b/plugins/X3DReader/X3DReader.py
@@ -38,14 +38,14 @@ class Shape:
         self.name = name
 
 class X3DReader(MeshReader):
-    def __init__(self):
-        super().__init__()
+    def __init__(self, application):
+        super().__init__(application)
         self._supported_extensions = [".x3d"]
         self._namespaces = {}
 
     # Main entry point
     # Reads the file, returns a SceneNode (possibly with nested ones), or None
-    def read(self, file_name):
+    def _read(self, file_name):
         try:
             self.defs = {}
             self.shapes = []
diff --git a/plugins/X3DReader/__init__.py b/plugins/X3DReader/__init__.py
index 9e0e2df91c..03ed4ae301 100644
--- a/plugins/X3DReader/__init__.py
+++ b/plugins/X3DReader/__init__.py
@@ -16,4 +16,4 @@ def getMetaData():
     }
 
 def register(app):
-    return { "mesh_reader": X3DReader.X3DReader() }
+    return { "mesh_reader": X3DReader.X3DReader(app) }