ERROR: Condition evaluation failed

[Phil Mayers]

(Sorry - lots of little things now I'm able to spend time looking at 3.x 
again)

I'm seeing errors like:

(10) ERROR: Condition evaluation failed because the value of an operand 
could not be determined: Unknown value 'Challenge' for attribute 
'Post-Auth-Type'

These are annoying for a couple of reasons. First they're popping up in 
the middle processing authorize, inside a policy item i.e.

policy {
   foo.authorize {
    ...
   }
   foo.post-auth {
    ...
   }
}
server X {
   authorize {
     ...
     foo
   }
   post-auth {
     foo
   }
}

...so as far as I'm concerned I'm not triggering them and shouldn't be 
seeing them.

Second, they're apparently being copied to Module-Failure-Message. We've 
logged this for a while to look for errors, and now I'm having to throw 
away this irrelevant junk. Does this really constitute a 
Module-Failure-Message?