Default [SGH-i500] TWRP Recovery not seeing the SD card

Installation was perfectly fine, most functions work. I'm on the latest nightly of the PACman ROM, but this problem occurs on other ROMs as well. The recovery does not show or detect(?) any SD card.
EDIT: The issue was resolved by ODIN flashing CWMR, and re-flashing the kernel. Apparently, the the recovery from the kernel had corrupted somehow, but re-flashing fixes this issue.