[horde] Upgrade ruins Horde

[Jānis]

Hi!

I recently upgraded Horde (by some 3-4subversions of 5.2.x)to the  
latest stable and immediately got the reaction below. Googling for  
solution did not help a lot. I even do not understand how can I login  
to the admin page now (auth mechanism is IMP). Do I have to re-install  
it once again from zero?! Why simple upgrade within a main version  
ruins the running installation?

Janis

error:

Uncaught exception 'Horde_Exception_PushApp' with message ' is not  
activated.' in /usr/lib64/php/Horde/Registry.php:1522 Stack trace: #0  
/usr/lib64/php/Horde/Registry.php(1189):  
Horde_Registry->pushApp('horde', Array) #1  
/usr/lib64/php/Horde/Registry.php(2106):  
Horde_Registry->callAppMethod('horde', 'logout') #2  
/usr/lib64/php/Horde/ErrorHandler.php(30):  
Horde_Registry->clearAuthApp('horde') #3 [internal function]:  
Horde_ErrorHandler::fatal(Object(Horde_Exception_AuthenticationFailure)) #4  
{main} thrown

1. Horde_ErrorHandler::catchFatalError()

Detaļas
Pilns kļūdas paziņojums saglabāts Horde žurnālā un tiks parādīts tikai  
administratoriem. Pārējie lietotāji kļūdas paziņojuma detaļas neredzēs.

ErrorException Object
(
     [message:protected] => Uncaught exception  
'Horde_Exception_PushApp' with message ' is not activated.' in  
/usr/lib64/php/Horde/Registry.php:1522
Stack trace:
#0 /usr/lib64/php/Horde/Registry.php(1189):  
Horde_Registry->pushApp('horde', Array)
#1 /usr/lib64/php/Horde/Registry.php(2106):  
Horde_Registry->callAppMethod('horde', 'logout')
#2 /usr/lib64/php/Horde/ErrorHandler.php(30):  
Horde_Registry->clearAuthApp('horde')
#3 [internal function]:  
Horde_ErrorHandler::fatal(Object(Horde_Exception_AuthenticationFailure))
#4 {main}
   thrown
     [string:Exception:private] =>
     [code:protected] => 0
     [file:protected] => /usr/lib64/php/Horde/Registry.php
     [line:protected] => 1522
     [trace:Exception:private] => Array
         (
             [0] => Array
                 (
                     [function] => catchFatalError
                     [class] => Horde_ErrorHandler
                     [type] => ::
                     [args] => Array
                         (
                         )

                 )

         )

     [previous:Exception:private] =>
     [severity:protected] => 1
     [logged] => 1
)