After few days of not using my Fuze+ it started it’s old tricks again…
This time I found a thread:
Sansa Fuze+ refuses to start with SDHC card
After replacing my microSD 32GB Class10 with some old and dirt cheap 8GB Class4, player is working correctly and without any hiccup.
Now I need 32GB Class4 ancient artefact - maybe I’ll just look behind the fridge and under the bed…