It now works... I changed the Transcend SDHC card for a Sandisk SDHC card and now the games start! Sorry for not trying that first. Thanks for the responses and for Swiss!

I can't video the proces. I boot Swiss r330 in slot B, after it has loaded I select the SD card (not yet pressing the green button). I swap the 2GB SD card for the 32GB SDHC card and press the green button. The content of the SDHC card is shown, but when I start a game I only see a black screen and ...

I'm looking for the latest 0.3 version of Swiss. The nightly build is 0.4 and I have read that hot swapping for a SDHC memory card is not possible in version 0.4 anymore (that is the reason every game launched from SDHC after hot swapping shows a black screen and nothing happens?)