I created a Steam instance, logged in, and created a project with 3 models. They worked, I deployed them, etc.
Then, I shut the machine down (it's in AWS) and came back a few days later and restarted the machine. It came up fine (with a different IP address, but that's expected).
However, when I went into the project and clicked "models", I got an SQL error (PNG attached).
I may have done some intervening things, like create another project, import some models (possibly some of the same models), delete them, etc.
Running latest Steam (nightly develop build from a few days ago – post-1.6).