[imp] Zero-length attachments

[Roger B.A. Klorese]

> Quoting "Roger B.A. Klorese" <rogerk at queernet.org>:
> 
> > - The issue seems to be trying to log in to configure imp, using 
> > application/imp authentication, before a conf.php has been 
> generated 
> > from the conf.xml...
> 
> You can't do that.  Either create a conf.php by hand for IMP, 
> or (better) configure horde to do another type of auth (IMAP 
> probably), login as admin, configure IMP, logout, and change 
> horde back to using application/imp auth.

Is that documented anywhere?