[Zope] [ANSWER] 500 error with IE on login

[Gregory Dudek]

  Re. my patch to zope to eliminate the default 500 error code:

  I considered a patch to the user folder product itself. Although I might have
given up too soon, it didn't look feasible based on my limited knowledge
of zope internals.
  I tried the obvious stuff but setting a "local" 302 or other
code in the user folder didn't work because it got over-ridden later
on the the authentication-catching process.  Also, while removing all
possibilities for a default 500 error from zope seems bad, note that
in all those other (hypothetical) cases MSIE would also prevent you
from seeing the potentially informative error page that zope might
generate.
  In short, based on MSIE behaviour I think it's better if zope
never generates a 500 error if it might also generate an informative
error-message page.
   I might add this to the collector if I only knew how...

> Have you had a look at the user folder you use in order to see where it 
> raises an exception (I guess that, but this might eventually lead to 
> HTTPResponse tacking the error 500 to the response)?
> Maybe it's possible to patch the user folder(s) to set a 302 header?