diff --git a/cura/CuraApplication.py b/cura/CuraApplication.py
index 462f411037..7e834d4dd2 100755
--- a/cura/CuraApplication.py
+++ b/cura/CuraApplication.py
@@ -1562,8 +1562,8 @@ class CuraApplication(QtApplication):
 
     openProjectFile = pyqtSignal(QUrl, arguments = ["project_file"])  # Emitted when a project file is about to open.
 
-    @pyqtSlot(QUrl)
-    def readLocalFile(self, file):
+    @pyqtSlot(QUrl, bool)
+    def readLocalFile(self, file, skip_project_file_check = False):
         if not file.isValid():
             return
 
@@ -1574,7 +1574,7 @@ class CuraApplication(QtApplication):
                 self.deleteAll()
                 break
 
-        if self.checkIsValidProjectFile(file):
+        if not skip_project_file_check and self.checkIsValidProjectFile(file):
             self.callLater(self.openProjectFile.emit, file)
             return
 
diff --git a/plugins/PluginBrowser/PluginBrowser.py b/plugins/PluginBrowser/PluginBrowser.py
index ad36ebe6da..8c91d5a4be 100644
--- a/plugins/PluginBrowser/PluginBrowser.py
+++ b/plugins/PluginBrowser/PluginBrowser.py
@@ -6,6 +6,7 @@ from PyQt5.QtNetwork import QNetworkAccessManager, QNetworkRequest, QNetworkRepl
 
 from UM.Application import Application
 from UM.Logger import Logger
+from UM.PluginError import PluginNotFoundError
 from UM.PluginRegistry import PluginRegistry
 from UM.Qt.Bindings.PluginsModel import PluginsModel
 from UM.Extension import Extension
@@ -302,10 +303,15 @@ class PluginBrowser(QObject, Extension):
         return self._plugins_model
 
     def _checkCanUpgrade(self, plugin_id, version):
-        if plugin_id not in self._plugin_registry.getInstalledPlugins():
+        if not self._plugin_registry.isInstalledPlugin(plugin_id):
+            return False
+
+        try:
+            plugin_object = self._plugin_registry.getPluginObject(plugin_id)
+        except PluginNotFoundError:
+            Logger.log("w", "Could not find plugin %s", plugin_id)
             return False
 
-        plugin_object = self._plugin_registry.getPluginObject(plugin_id)
         # Scan plugin server data for plugin with the given id:
         for plugin in self._plugins_metadata:
             if plugin_id == plugin["id"]:
diff --git a/resources/qml/AskOpenAsProjectOrModelsDialog.qml b/resources/qml/AskOpenAsProjectOrModelsDialog.qml
index bd37d1acdb..6b1856723b 100644
--- a/resources/qml/AskOpenAsProjectOrModelsDialog.qml
+++ b/resources/qml/AskOpenAsProjectOrModelsDialog.qml
@@ -53,7 +53,7 @@ UM.Dialog
             UM.Preferences.setValue("cura/choice_on_open_project", "open_as_model")
         }
 
-        CuraApplication.readLocalFile(base.fileUrl)
+        CuraApplication.readLocalFile(base.fileUrl, true)
         var meshName = backgroundItem.getMeshName(base.fileUrl.toString())
         backgroundItem.hasMesh(decodeURIComponent(meshName))
 
diff --git a/resources/qml/Menus/RecentFilesMenu.qml b/resources/qml/Menus/RecentFilesMenu.qml
index 579eb24344..12f53fb517 100644
--- a/resources/qml/Menus/RecentFilesMenu.qml
+++ b/resources/qml/Menus/RecentFilesMenu.qml
@@ -61,7 +61,7 @@ Menu
                 }
                 else if (toOpenAsModel)
                 {
-                    CuraApplication.readLocalFile(modelData);
+                    CuraApplication.readLocalFile(modelData, true);
                 }
                 var meshName = backgroundItem.getMeshName(modelData.toString())
                 backgroundItem.hasMesh(decodeURIComponent(meshName))
diff --git a/resources/qml/OpenFilesIncludingProjectsDialog.qml b/resources/qml/OpenFilesIncludingProjectsDialog.qml
index af8fb9e05f..3dcd4b6236 100644
--- a/resources/qml/OpenFilesIncludingProjectsDialog.qml
+++ b/resources/qml/OpenFilesIncludingProjectsDialog.qml
@@ -42,7 +42,7 @@ UM.Dialog
     {
         for (var i in fileUrls)
         {
-            CuraApplication.readLocalFile(fileUrls[i]);
+            CuraApplication.readLocalFile(fileUrls[i], true);
         }
 
         var meshName = backgroundItem.getMeshName(fileUrls[0].toString());