diff --git a/cura/PrintInformation.py b/cura/PrintInformation.py
index 2cf589bfa4..46d9a61254 100644
--- a/cura/PrintInformation.py
+++ b/cura/PrintInformation.py
@@ -264,10 +264,12 @@ class PrintInformation(QObject):
     def jobName(self):
         return self._job_name
 
-    def _updateJobName(self):
+    def _updateJobName(self, empty_name = False):
         # if the project name is set, we use the project name as the job name, so the job name should not get updated
         # if a model file is loaded after that.
         if self._project_name != "":
+            if empty_name:
+                self._project_name = ""
             return
 
         if self._base_name == "":
@@ -304,12 +306,13 @@ class PrintInformation(QObject):
         name = os.path.splitext(name)[0]
 
         # name is "" when I first had some meshes and afterwards I deleted them so the naming should start again
-        if name == "" or (self._base_name == "" and self._base_name != name):
+        is_empty = name == ""
+        if is_empty or (self._base_name == "" and self._base_name != name):
             # remove ".curaproject" suffix from (imported) the file name
             if name.endswith(".curaproject"):
                 name = name[:name.rfind(".curaproject")]
             self._base_name = name
-            self._updateJobName()
+            self._updateJobName(empty_name = is_empty)
 
     ##  Created an acronymn-like abbreviated machine name from the currently active machine name
     #   Called each time the global stack is switched
diff --git a/plugins/CuraEngineBackend/CuraEngineBackend.py b/plugins/CuraEngineBackend/CuraEngineBackend.py
index 0c1fc6f4ad..14c1c10b90 100755
--- a/plugins/CuraEngineBackend/CuraEngineBackend.py
+++ b/plugins/CuraEngineBackend/CuraEngineBackend.py
@@ -301,6 +301,26 @@ class CuraEngineBackend(QObject, Backend):
                 self.backendStateChange.emit(BackendState.NotStarted)
             return
 
+        elif job.getResult() == StartSliceJob.StartJobResult.ObjectSettingError:
+            errors = {}
+            for node in DepthFirstIterator(Application.getInstance().getController().getScene().getRoot()):
+                stack = node.callDecoration("getStack")
+                if not stack:
+                    continue
+                for key in stack.getErrorKeys():
+                    definition = self._global_container_stack.getBottom().findDefinitions(key = key)
+                    if not definition:
+                        Logger.log("e", "When checking settings for errors, unable to find definition for key {key} in per-object stack.".format(key = key))
+                        continue
+                    definition = definition[0]
+                    errors[key] = definition.label
+            error_labels = ", ".join(errors.values())
+            self._error_message = Message(catalog.i18nc("@info:status", "Unable to slice due to some per-model settings. The following settings have errors on one or more models: {error_labels}").format(error_labels = error_labels),
+                                          title = catalog.i18nc("@info:title", "Unable to slice"))
+            self._error_message.show()
+            self.backendStateChange.emit(BackendState.Error)
+            return
+
         if job.getResult() == StartSliceJob.StartJobResult.BuildPlateError:
             if Application.getInstance().platformActivity:
                 self._error_message = Message(catalog.i18nc("@info:status", "Unable to slice because the prime tower or prime position(s) are invalid."),
diff --git a/plugins/CuraEngineBackend/StartSliceJob.py b/plugins/CuraEngineBackend/StartSliceJob.py
index 196b18e094..b922baea52 100644
--- a/plugins/CuraEngineBackend/StartSliceJob.py
+++ b/plugins/CuraEngineBackend/StartSliceJob.py
@@ -26,6 +26,7 @@ class StartJobResult(IntEnum):
     NothingToSlice = 4
     MaterialIncompatible = 5
     BuildPlateError = 6
+    ObjectSettingError = 7 #When an error occurs in per-object settings.
 
 
 ##  Formatter class that handles token expansion in start/end gcod
@@ -105,7 +106,7 @@ class StartSliceJob(Job):
                 continue
 
             if self._checkStackForErrors(node.callDecoration("getStack")):
-                self.setResult(StartJobResult.SettingError)
+                self.setResult(StartJobResult.ObjectSettingError)
                 return
 
         with self._scene.getSceneLock():