Fatal error: Call to a member function on a non-object in /home/httpd/www/ezpublish/kernel/workflow/processlist.php on line 56
Fatal error: eZ publish did not finish its request

The execution of eZ publish was abruptly ended, the debug output is present below.
eZ debug
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Notice: eZMySQLDB::query(0.000 ms) query number per page:0 	Nov 04 2007 19:54:08

SET NAMES 'utf8'

Notice: eZMySQLDB::query(1 rows, 0.466 ms) query number per page:1 	Nov 04 2007 19:54:08

SELECT data, user_id, expiration_time FROM ezsession WHERE session_key='38f978a3a7f4fd5da7e1029363a49df3'

Notice: eZMySQLDB::query(0 rows, 0.127 ms) query number per page:2 	Nov 04 2007 19:54:08

SELECT destination_url, forward_to_id
FROM ezurlalias
WHERE source_md5 = '65540c9b9d5c4ca80dd514b1d7bc1ecd' AND
      is_wildcard = 0
ORDER BY forward_to_id ASC, is_internal ASC
LIMIT 0, 1

Timing: 	Nov 04 2007 19:54:08

Module start 'workflow'

Notice: eZMySQLDB::query(1 rows, 0.156 ms) query number per page:3 	Nov 04 2007 19:54:08

SELECT id, process_key, workflow_id, user_id, content_id, content_version, session_key,
       node_id, event_id, event_position, event_state, last_event_id, last_event_position, last_event_status,
       event_status, created, modified, activation_date, status, parameters, memento_key
                    FROM   ezworkflow_process
WHERE  status IN ( '4', '6', '7', '9' )  AND memento_key != ''
ORDER BY user_id ASC

Notice: eZMySQLDB::query(0 rows, 0.091 ms) query number per page:4 	Nov 04 2007 19:54:08

SELECT id, main, memento_key, main_key, memento_data
                    FROM   ezoperation_memento
WHERE  memento_key='c97b83b60a15bb300ffb79d365eccc2a' AND main='1'

Notice: eZMySQLDB::query(0 rows, 0.078 ms) query number per page:5 	Nov 04 2007 19:54:08

SELECT id, main, memento_key, main_key, memento_data
                    FROM   ezoperation_memento
WHERE  memento_key='c97b83b60a15bb300ffb79d365eccc2a' AND main='0'

Timing points:

Notice: Undefined variable: relMemory in /home/httpd/www/ezpublish/lib/ezutils/classes/ezdebug.php on line 1494
Checkpoint	Elapsed	Rel. Elapsed	Memory	Rel. Memory
Module start 'workflow'	0.0000 sec	 	558.1484KB	0.0000KB
Total runtime:	0.0455 sec	
Time accumulators:
 Accumulator	 Elapsed	 Percent	 Count	 Average
ini_load				
Load cache	0.0107 sec	12.7974%	8	0.0013 sec
FindInputFiles	0.0069 sec	8.1922%	8	0.0009 sec
Mysql Total				
Mysql_queries	0.0036 sec	4.2319%	5	0.0007 sec
Looping result	0.0001 sec	0.1597%	2	0.0001 sec
TS translator				
TS init	0.0032 sec	3.8319%	1	0.0032 sec
TS cache load	0.0011 sec	1.3678%	1	0.0011 sec
TS context load	0.0004 sec	0.4551%	1	0.0004 sec
Template Total	0.0311 sec	37.0%	1	0.0311 sec
Template load	0.0072 sec	8.5539%	1	0.0072 sec
Template processing	0.0236 sec	28.1314%	1	0.0236 sec
override				
Cache load	0.0053 sec	6.3185%	1	0.0053 sec
General				
dbfile	0.0001 sec	0.1704%	2	0.0001 sec
Total script time:	0.0839 sec