Adaptions to permission handling of Android V8.0.
Applies to Plus Version on devices with Android-Version 6.0 and above and access on external storage was denied:
Bugfix: Forced Stop after Update station data from SD card.
Bugfix: App hangs after Download station date to SD card.
Information: forced stops only on LG devices LG3 & LG4 with Android 6.0., not on other devices. Might be a problem with Android 6.0 on LG devices.