Cannot start app - storage is full or not accessible
After reinstalling, I got the following message. NB: this is a translation from Dutch, so it will probably be worded differently!
Cannot start app. The storage on your phone is full or unavailable. Check the storage of your phone or your SD card. If you still cannot start the app, you need to reset it and download the cards once again.
(In Dutch) Kan app niet starten. De opslagruimte op je telefoon is vol of niet beschikbaar. Controleer de opslagruimte van je telefoon of je SD-kaart. Als je app nog steeds niet kunt starten, dien je deze te resetten en je kaarten opnieuw te downloaden.
In the past I've had problems with this phone, as it couldn't use the external SD, or only a few apps (like Total Commander) could read to and write from the SD card. The rest - like TomTom GO - couldn't use it, so had to rely on the internal storage. Several months ago I got a system update, and now that works. I don't know if that has anything to do with it, I just mention it here.
I've tried several restarts, and several reinstalls.
What can I do to get this working again?