I also get a blackscreen and have tried with two different SD card brands. I verified there is no problem with the card by writing the standard rasberry PI OS to the card and that worked fine. I have verified the checksum and it looks good. I tried version 1.0.4 and it did not work. Can I try a newer or older version of the vPi software. Is there a link you can send me for a version other than 1.0.4?
Thanks,
Jason