Hi,
Yes, I have been using same hdf and Platinum SD-card 32 GB with cluster size of 16k.
Because it is older card, I just freshly formatted new Sandisk Extreme Pro 32 GB with cluster size of 16k.
Unfortunately ST-core behaves just like using Platinum-card.
My hdf-file for ST is 3 Gb split to 6 partitions, could that 3 Gb size cause problems?
Cheers,
Pasi