Thank you, thorfinn , for pointing this out...

"LJ has quietly broken the comment exporter, which I was using to back up comments. If I can't retain an offsite backup off my journal, I'm not interested in paying for the service."

Ouch. I didn't know about this, and it sucks. I haven't been trying to get people to leave LJ for Dreamwidth, but it's something LJ users should know about.

I have spare codes, if anyone does want one.