When I'm dumping any PS3 disc using the latest test version of DIC I encounter the following error:
LBA[000000, 0000000]: [F:ReadDiscStructure][L:1297]
ScsiStatus: 0x02 = CHECK_CONDITION
SenseData Key-Asc-Ascq: 05-24-00 = ILLEGAL_REQUEST - INVALID FIELD IN CDB
Drive is LG BH16NS55 / FW 1.04
It's because you're not using a PS3 drive with a 3k3y so it's unable to pull the disc key. It's totally normal and expected, don't worry about it.
Thank you both!