[horde] White Screen after Upgrade

[Chris]

Hello,

I just upgraded horde today, and something obviously went awry. When 
going there in Firefox, I get nothing but a white screen.  When going 
there in chrome, I get " HTTP Error 500 (Internal Server Error): An 
unexpected condition was encountered while the server was attempting to 
fulfill the request", and when visiting in IE, I get "The website cannot 
display the Page..." another 500 error.

I have been looking in the logs, and I have this in my horde.log:

2013-11-24T19:40:01+00:00 DEBUG: HORDE [imp] Load config file (conf.php; 
app: imp) [pid 2487 on line 402 of "/usr/share/php/Horde.php"]
2013-11-24T19:40:01+00:00 DEBUG: HORDE [imp] Load config file 
(prefs.php; app: horde) [pid 2487 on line 402 of "/usr/share/php/Horde.php"]
2013-11-24T19:40:01+00:00 DEBUG: HORDE [imp] Load config file 
(prefs.php; app: imp) [pid 2487 on line 402 of "/usr/share/php/Horde.php"]
2013-11-24T19:40:01+00:00 DEBUG: HORDE [imp] Load config file 
(backends.php; app: imp) [pid 2487 on line 402 of 
"/usr/share/php/Horde.php"]
2013-11-24T19:40:01+00:00 DEBUG: HORDE Load config file (hooks.php; app: 
kronolith) [pid 2487 on line 402 of "/usr/share/php/Horde.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Load config file (conf.php; app: 
horde) [pid 2534 on line 402 of "/usr/share/php/Horde.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting sam inactive because the 
fileroot does not exist or the application is not configured yet. [pid 
2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting trean inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting ansel inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting wicked inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting chora inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting whups inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting luxor inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting klutz inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting jonah inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting hermes inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting sesha inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting kolab inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting passwd inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting agora inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting ulaform inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Setting vilma inactive because 
the fileroot does not exist or the application is not configured yet. 
[pid 2534 on line 738 of "/usr/share/php/Horde/Registry.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Load config file (nls.php; app: 
horde) [pid 2534 on line 402 of "/usr/share/php/Horde.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE [imp] Load config file (conf.php; 
app: imp) [pid 2534 on line 402 of "/usr/share/php/Horde.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE [imp] Load config file 
(prefs.php; app: horde) [pid 2534 on line 402 of "/usr/share/php/Horde.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE [imp] Load config file 
(prefs.php; app: imp) [pid 2534 on line 402 of "/usr/share/php/Horde.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE [imp] Load config file 
(backends.php; app: imp) [pid 2534 on line 402 of 
"/usr/share/php/Horde.php"]
2013-11-24T19:45:01+00:00 DEBUG: HORDE Load config file (hooks.php; app: 
kronolith) [pid 2534 on line 402 of "/usr/share/php/Horde.php"]

Which doesn't seem like an issue, since I'm not running any of the afore 
mentioned complaints (whups, herme, jonah, klutz, kolab, etc.).

And I'm getting this spat out in my apache2 error.log file every time I 
try to visit the site:
[Sun Nov 24 14:47:03 2013] [error] [client PHP Fatal error:  Class 
'kronolith_Hooks' not found in /usr/share/php/Horde/Core/Hooks.php on 
line 88, referer: https://www.myserver.com/horde/services/portal/
[Sun Nov 24 14:47:05 2013] [error] [client] PHP Fatal error:  Class 
'kronolith_Hooks' not found in /usr/share/php/Horde/Core/Hooks.php on 
line 88, referer: https://www.myserver.com/horde/services/portal/
[Sun Nov 24 14:47:05 2013] [error] [client] PHP Fatal error:  Class 
'kronolith_Hooks' not found in /usr/share/php/Horde/Core/Hooks.php on 
line 88, referer: https://www.myserver.com/horde/services/portal/

Prior to the upgrade, we had a flawlessly running horde.  I have 
reviewed the docs and whatnot, and I cannot see where I went wrong.

Just to make sure I got all the deps, I did a pear upgrade --alldeps, 
and everything was satisified:

pear list-upgrades
Channel pear.horde.org: No upgrades available
Channel pear.php.net: No upgrades available
Channel pear.phpunit.de: No upgrades available
Channel pear.symfony-project.com: No upgrades available
Channel pear.symfony.com: No upgrades available
Channel pecl.php.net: No upgrades available


Clearly, something came out of sync.  Any ideas on what happened here?

Thank you!

-Chris