I have a 32GB SDHC Transcend Class 10 card. One would think that at least the support Transcend own cards, or zumindes know how to address this. But unfortunately, no trace of it. When copying the transmission breaks off again and again I use my old MSI USB 2.0 card reader. BTW, I did it the latest FW TS21.
Transcend! Do your homework and bring an FW out, with which there are no more problems!