@Josiah @jolyon I run into the same issue. Look like a bootstrapping problem. To install the plugins, you need to run sbot server, but if the plugins not there yet, sbot server will crash. I have to start with commenting the plugins first, start sbot server, install the plugins, and then copy paste back the original config.

Your ssb_appname is ssb_test whereas I was using ssb-test. Not sure if that is the problem?

You're right.