Some time after Kevin sends me on a quest to find a suitable cluster from his
data, I come back and I find his entrance guard bot dead.  Since he's dead, he
of course won't confirm my identity and the inner gate remains locked.  Kevin
does not notice.  I've searched this database and via Google search engine and
have not found a fix. This bug doesn't seem terribly important since after a
while (it took a LOT longer than it should have) I found out I could just walk
to the north along the house between the fence and the housewall and enter but
this seems like a bug that might need to be fixed.

I wrote a patch that warns the player that this makes (or at least should make)
the game unwinnable back in May: http://rb.freedroid.org/r/1818/

However, perhaps the gate should default to unlocked if the KevenGuard is dead?

Update: the above patch (r1818) has been committed.

A patch by Xenux (http://rb.freedroid.org/r/1828/ ) to make Kevin's place
accessible is in the works.

Fixed in 76c5cafa8a174e984528a8e6cbae466551a69229. Thanks!.