500 error after upgrading to RoR 1.2.1

try load '/path/to/store_controller' in your ./script/console to see if
the controller loads without errors...

(seems like my reply lost somewhere...)
And I was wondering why this loading error doesn' get propagated to the
top, so you can see real issue in stack trace.
Looks like a bug, doesn't it ?

Can anyone explain this?