[imp] Re. Upgrading IMP 4.0.3 -> 4.1

[Matthias Krawen]

>i try to upgrade IMP from version 4.0.3 to 4.1, Using Horde 3.1
>
>I used the tar to create a new imp-folder, created new configs from
>the servers.php.dist but when I try to open IMP i get a lot of error
>messages like
>
>Warning: Invalid argument supplied for foreach() in
>/srv/www/htdocs/admin/horde/imp/lib/Folder.php on line 671
>Warning: Invalid argument supplied for foreach() in
>/srv/www/htdocs/admin/horde/imp/lib/IMP.php on line 1207
>Warning: Invalid argument supplied for foreach() in
>/srv/www/htdocs/admin/horde/imp/lib/IMP.php on line 1207
>
>I'm a bit confused because a fresh installation on another server
>using Horde 3.1 and Imp 4.1 worked fine using the similar configs.

BTW: I've installed Horde and Plugins (Imp, Turba, Ingo, Kronolith) 
from the start, used the same databases and configs (except the .xml) 
and - it works... I'm puzzled...

Gruss
  Matthias