--- a/src/eric7/MicroPython/MicroPythonWidget.py Sun Jan 29 11:27:53 2023 +0100 +++ b/src/eric7/MicroPython/MicroPythonWidget.py Thu Feb 02 13:42:50 2023 +0100 @@ -1456,7 +1456,7 @@ ) act.setEnabled(self.__device.hasDocumentationUrl()) self.__superMenu.addSeparator() - if not self.__device.hasFlashMenuEntry(): + if self.__device is not None and not self.__device.hasFlashMenuEntry(): self.__superMenu.addAction(self.tr("Flash UF2 Device"), self.__flashUF2) self.__superMenu.addSeparator() self.__superMenu.addAction(