[horde] php Errors - Left Navbar is Blank

[Vadim Pushkin]

I've enabled error logging in my php.ini and have tracked down my problems 
to this, but I do not know how to resolve this issue.

Can seomone please shed some light on this?

.vp

[10-May-2007 08:41:40] PHP Fatal error:  Call to undefined method 
Horde_Cache::horde_cache_sql() in /usr/share/pear/Horde/Cache/sql.php on 
line 92
[10-May-2007 08:41:40] PHP Stack trace:
[10-May-2007 08:41:40] PHP   1. {main}() 
/horde/services/portal/sidebar.php:0
[10-May-2007 08:41:40] PHP   2. Horde_Block->buildTree() 
/horde/services/portal/sidebar.php:228
[10-May-2007 08:41:40] PHP   3. Horde_Block_chora_tree_menu->_buildTree() 
/usr/share/pear/Horde/Block.php:192
[10-May-2007 08:41:40] PHP   4. require_once() 
/horde/chora/lib/Block/tree_menu.php:17
[10-May-2007 08:41:40] PHP   5. Horde_Cache->singleton() 
/horde/chora/lib/base.php:37
[10-May-2007 08:41:40] PHP   6. Horde_Cache->factory() 
/usr/share/pear/Horde/Cache.php:204
[10-May-2007 08:41:40] PHP   7. Horde_Cache_sql->Horde_Cache_sql() 
/usr/share/pear/Horde/Cache.php:169
[10-May-2007 08:41:40] PHP Stack trace:
[10-May-2007 08:41:40] PHP   1. {main}() 
/horde/services/portal/sidebar.php:0
[10-May-2007 08:41:40] PHP   2. Horde_Block->buildTree() 
/horde/services/portal/sidebar.php:228
[10-May-2007 08:41:40] PHP   3. Horde_Block_chora_tree_menu->_buildTree() 
/usr/share/pear/Horde/Block.php:192
[10-May-2007 08:41:40] PHP   4. require_once() 
/horde/chora/lib/Block/tree_menu.php:17
[10-May-2007 08:41:40] PHP   5. Horde_Cache->singleton() 
/horde/chora/lib/base.php:37
[10-May-2007 08:41:40] PHP   6. Horde_Cache->factory() 
/usr/share/pear/Horde/Cache.php:204
[10-May-2007 08:41:40] PHP   7. Horde_Cache_sql->Horde_Cache_sql() 
/usr/share/pear/Horde/Cache.php:169