HTC One X "sd card blank or has unsupported file system"?

[SpagsNumberOne]

I recently flashed a rom on my One X using TWRP and ran into this problem of my sd card being pretty much non existent. I cant access the gallery or take pictures with the camera and when i try to connect it to my computer, the sd card doesn't show up at all. The rom was a CM10 running android 2.3
i also tried formatting but no luck there either. Can anyone help me?