Was previously using 0.2.0.00 with just Mystcraft, worked fine. Had to update LG for use with SC, neither the book previews nor the camera monitor work. SC won't launch with only 0.2.0.00.

Followup: MASSIVE log spam when opening a Mystcraft book, I assume from attempting to render the preview window. https://gist.github.com/Shahelion/c060636355b155e6e6750d7c3b8b64e4 This was from opening a linking book for a couple of seconds. Note the timestamps are all from the same moment.