Unhandled exception in spawn: attempt to write a readonly database

[DuraMorte]

Just upgraded my binary to 0.2.2.
Prior, launching with "./mango &" worked perfectly.
Now, I am getting the error in the title.
The entire message is as follows:

Unhandled exception in spawn: attempt to write a readonly database (SQLite3::Exception)
from ???
from ???
from ???
from ???
from ???
from ???
from ???
from ???
from ???
from ???

There isn't a crash; the software is still running. However, I can't see any of my titles, and the scanner runs forever.
What database is being referred to, and how can I change it to rw?

[DuraMorte]

Caused by user error. See comments in #18 for details.