problem monitoring linux log file

[smitty]

I am running zabbix 1.8.4 and I am trying to monitor a log file on a linux client. The zabbix user definitely has permission to the file. Unfortunately it is not working (always becomes disabled - other check such as memory,disk space, etc work fine). Any help would be greatly appreciated.

Item is defined as:
host: myhost01
Description: ndm error log
Type: zabbix agent (active)
Key: Logrt["/opt/cdlinux/work/myhost01/S2*","errno"]
Type: Log


Here is the zabbix_agentd.conf (comment lines removed):
PidFile=/var/run/zabbix/zabbix_agentd.pid
LogFile=/var/log/zabbix/zabbix_agentd.log
LogFileSize=0
DebugLevel=4
EnableRemoteCommands=1
LogRemoteCommands=1
Server=zabbix.example.com
Hostname=myhost01
ListenPort=10050
ServerPort=10051

In my agent.log I get the following:
23340:20111207:103807.816 refresh_active_checks('zabbix.example.com',10051)
23340:20111207:103807.817 Sending [{
"request":"active checks",
"host":"myhost01"}]
23340:20111207:103807.817 Before read
23340:20111207:103807.819 Got [{
"response":"success",
"data":[
{
"key":"Logrt[\"\/opt\/cdlinux\/work\/myhost01\/S2*\",\"errno\",\"UTF-8\",100]",
"delay":"60",
"lastlogsize":"0",
"mtime":"0"}]}]
23340:20111207:103807.819 In parse_list_of_checks()
23340:20111207:103807.819 In disable_all_metrics()
23340:20111207:103807.819 In add_check('Logrt["/opt/cdlinux/work/myhost01/S2*","errno","UTF-8",100]', 60, 0, 0)
23340:20111207:103807.819 In process_active_checks('zabbix.example.com',10051)
23340:20111207:103807.819 For key [Logrt["/opt/cdlinux/work/myhost01/S2*","errno","UTF-8",100]] received value [ZBX_NOTSUPPORTED]
23340:20111207:103807.819 In process_value() key:'myhost01:Logrt["/opt/cdlinux/work/myhost01/S2*","errno","UTF-8",100]' value:'ZBX_NOTSUPPORTED'
23340:20111207:103807.819 In send_buffer() host:'zabbix.example.com' port:10051 values:0/100
23340:20111207:103807.819 End of send_buffer():SUCCEED
23340:20111207:103807.819 Buffer: new element 0
23340:20111207:103807.819 Active check [Logrt["/opt/cdlinux/work/myhost01/S2*","errno","UTF-8",100]] is not supported. Disabled.
23340:20111207:103807.819 In get_min_nextcheck()
23340:20111207:103807.819 Sleeping for 1 seconds
23340:20111207:103808.820 In send_buffer() host:'zabbix.example.com' port:10051 values:1/100
23340:20111207:103808.821 JSON before sending [{
"request":"agent data",
"data":[
{
"host":"myhost01",
"key":"Logrt[\"\/opt\/cdlinux\/work\/myhost01\/S2*\",\"errno\",\"UTF-8\",100]",
"value":"ZBX_NOTSUPPORTED",
"clock":1323272287}],
"clock":1323272288}]
23340:20111207:103808.862 JSON back [{
"response":"success",
"info":"Processed 1 Failed 0 Total 1 Seconds spent 0.040078"}]
23340:20111207:103808.862 In check_response({
"response":"success",
"info":"Processed 1 Failed 0 Total 1 Seconds spent 0.040078"})
23340:20111207:103808.862 Info from server: Processed 1 Failed 0 Total 1 Seconds spent 0.040078
23340:20111207:103808.862 OK
23340:20111207:103808.862 End of send_buffer():SUCCEED

[smitty]

Anyone? I'm wondering if this is a bug...