Hello,

you must insert a semicolon at the end of the line. So you must insert 
"print_r($scripts);"

I have the same error und found out, that the $scripts variable is set 
to a string "sieve"

I used the backend configuration from the backends.ph and copied it 
into my backend.local.php:

$backends['sieve'] = array(
     'disabled' => false,
     'transport' => array(
         Ingo::RULE_ALL => array(
             'driver' => 'timsieved',
             'params' => array(
                 'hostspec' => 'localhost',
                 'logintype' => 'PLAIN',
                 'usetls' => false,
                 'port' => 4190,
                 'scriptname' => 'ingo',
                 'debug' => true,
             ),
         ),
     ),
     'script' => array(
         Ingo::RULE_ALL => array(
             'driver' => 'sieve',
             'params' => array(
                 'utf8' => false,
              ),
         ),
     ),
     'shares' => false
);

Can you help me to locate the error.

Best wishes,
Michael Roth

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I've restarted my Apache2 severeal times, but the error did not go away!

If I insert "print_r($scripts)"  before line 116 in 
"/var/www/horde/ingo/lib/Factory/Script.php" as suggested, so it reads
--- snip ---
public function createAll()
     {
         $scripts = $GLOBALS['session']
             ->get('ingo', 'backend/script', Horde_Session::TYPE_ARRAY);
         $instances = array();
         /* 2013-10-11, 10:04:36, haasc: fuer debugging */
         print_r($scripts)
         foreach (array_keys($scripts) as $rule) {
             $instances[$rule] = $this->create($rule);
         }
         return $instances;
     }
--- snap ---

and reload the page, the whole Horde-WebUI (not only Ingo!) wents just white.
No error in "var/log/syslog", no error in "/var/log/apache2/error.log" ...

After removing or commenting the "print_r($scripts)"-line, everything 
is again OK besides that no sieve-filters are displayed in Ingo.

Where can I look further?

System Debian, Horde 5.1.2. Ingo 3.1.2.
The Mailserver resides on different machine.
I have several sieve-scripts, which I can manage on the mailserver via 
sievshell, so that it is verfied that timsieved is working.

Hm thats interesting - i did reload and restart the webserver via 
reload and restart commands of init script after installation + 
reconfiguring. Did not help yesterday.

Looking at the server today to provide the needed infos its working 
and filters are there, so actually i don't know why something was 
cached and why its gone now - sorry for the noise.

Have you tried restarting your web/PHP server?  That is the correct 
line, so if it is not working something might be cached.

Otherwise, you will need to debug to determine what *is* the value on 
line 116 (i.e. adding print_r($scripts) debug statement right before 
line 116).

Did upgrade Ingo and Horde to 3.1.1 and 5.1.1. I did upgrade the 
backends.local.php to read:

<?php
$backends['imap']['disabled'] = true;
$backends['sieve']['disabled'] = false;
$backends['sieve']['script'][Ingo::RULE_ALL]['params']['utf8'] = true;
?>

but the horde error log still does complain:

Jun 27 16:28:30 mail HORDE: [ingo] PHP ERROR: Invalid argument 
supplied for foreach() [pid 24197 on line 116 of 
"/var/www/horde/ingo/lib/Factory/Script.php"]
Jun 27 16:28:30 mail HORDE: [ingo] PHP ERROR: array_keys() expects 
parameter 1 to be array, string given [pid 24197 on line 116 of 
"/var/www/horde/ingo/lib/Factory/Script.php"]

The rules itself are stored and configured in the standard sql backend 
configured since initial installation of this instance.

Did a "grep \'script\'" in the ingo config folder but all 'script' 
matches are arrays.

backends.local.php:$backends['sieve']['script'][Ingo::RULE_ALL]['params']['utf8'] = 
true;
backends.php: * 
$backends['sieve']['script'][Ingo::RULE_ALL]['params']['utf8'] = true;
backends.php:    'script' => array(
backends.php:    'script' => array(
backends.php:    'script' => array(
backends.php:    'script' => array(
backends.php:    'script' => array(
backends.php:    'script' => array(
backends.php:    'script' => array(
backends.php:    'script' => array(
prefs.php:$prefGroups['script'] = array(

Whats wrong here? Something i can do to get Ingo working again?

PHP version used is: 5.3.2-1ubuntu4.19 from Ubuntu LTS 10.04 Server variant.