We have two batch jobs that run just after midnight. When I run it manually via the Developer Console Anonymous window, they run fine. But last night, the "Apex Jobs" window showed that they failed. The Status states:
Completed First error: Attempt to de-reference a null object
Now I know what that means, but I have no information to debug it. As I said, when I run it manually I can turn on the debug logs, but it does not fail.
It seems odd that there is no "master error log" where I can see more about what happened... or is there?