--- a/src/eric7/MicroPython/Devices/CircuitPythonUpdater/ShowOutdatedDialog.py Wed Feb 15 17:45:10 2023 +0100 +++ b/src/eric7/MicroPython/Devices/CircuitPythonUpdater/ShowOutdatedDialog.py Wed Feb 15 18:00:20 2023 +0100 @@ -125,7 +125,7 @@ if self.__selectionMode: if item.checkState(0) == Qt.CheckState.Checked: self.__checkCount += 1 - else: + elif self.__checkCount > 0: self.__checkCount -= 1 self.__checkCountUpdated()