Hi caolanmck,
got the nightly build installed and working, and wifi worked perfectly
Nice to hear that wifi works for you.
Should I just reflash, reexpand partitions and filesystem, download nightly build and connect to wifi again?
If you are familiar with linux, you can try to mount your card on an other linux machine and fix the corrupted journal.
But if i were you, i would start with a fresh installation.
Frank