When I try to update from epo agent. I get following log.
Agent Subsystem 02.01.2008 15:34:35 Info Agent will connect to the ePO Server in 30 minutes and 0 seconds.
Agent Subsystem 02.01.2008 15:34:35 Info Agent communication session closed
Agent Subsystem 02.01.2008 15:34:35 Info No package received from ePO Server
Internet Manager 02.01.2008 15:34:35 Info Upload success and no package to receive
Agent Subsystem 02.01.2008 15:34:35 Info Agent is connecting to ePO server
Agent Subsystem 02.01.2008 15:34:35 Info Agent is sending EVENT package to ePO server
Agent Subsystem 02.01.2008 15:34:35 Info Agent communication session started
Agent Subsystem 02.01.2008 15:34:35 Info Agent uploading 1 events to ePO Server
Agent Subsystem 02.01.2008 15:34:35 Info Agent is looking for events to upload
Script 02.01.2008 15:34:35 Info Closing the update session.
Agent Subsystem 02.01.2008 15:34:25 Info Agent is looking for events to upload
Agent Monitor 02.01.2008 15:34:25 Detail Sending Events...
Script 02.01.2008 15:34:05 Info Update Finished
Script 02.01.2008 15:34:02 Info Verifying PatchTmpDet.McS.
Script 02.01.2008 15:34:02 Info Verifying VS710Det.McS.
Script 02.01.2008 15:34:02 Info Verifying NavDet.McS.
Script 02.01.2008 15:34:02 Info Searching available updates for Agent 3.5.5.
Script 02.01.2008 15:34:01 Info Verifying AGT300Det.McS.
Script 02.01.2008 15:34:01 Info Verifying VSE850Det.McS.
Script 02.01.2008 15:34:01 Info Product(s) running the latest HotFix 14.
Script 02.01.2008 15:34:01 Info Searching available updates for VirusScan 8.0.0.
Script 02.01.2008 15:34:01 Info Verifying VS800det.mcs.
Script 02.01.2008 15:34:01 Info Verifying RSS100Det.McS.
Script 02.01.2008 15:34:01 Info Verifying PatchDet.McS.
Script 02.01.2008 15:34:01 Info Update failed to version 5.2.00.
Script 02.01.2008 15:34:00 Info Starting Engine update.
Scheduler 02.01.2008 15:34:00 Info Added a new task start-up-date to Scheduler's task list
Scheduler 02.01.2008 15:34:00 Info Next time(local) of task start-up-date: 02 Ocak 2008 Çarşamba 15:37:00
Scheduler 02.01.2008 15:34:00 Info Next time(local) of task start-up-date: 03 Ocak 2008 Perşembe 15:26:00
Script 02.01.2008 15:34:00 Info The update task will be re-tried in 3 minutes because update is in progress.
Scheduler 02.01.2008 15:34:00 Info Scheduler: Invoking task [start-up-date]...
Script 02.01.2008 15:33:59 Info Loading update configuration from: PkgCatalog.xml
Script 02.01.2008 15:33:59 Info Extracting PkgCatalog.z.
Script 02.01.2008 15:33:59 Info Verifying PkgCatalog.z.
Script 02.01.2008 15:33:59 Info Downloading PkgCatalog.z.
Script 02.01.2008 15:33:59 Info Searching available updates for Engine.
Script 02.01.2008 15:33:59 Info Verifying EngDet.mcs.
Script 02.01.2008 15:33:59 Info Update failed to version 4.0.5196.
Script 02.01.2008 15:33:59 Info Invalid virus definition files.
Script 02.01.2008 15:33:54 Info Verifying dat-5196.zip.
Script 02.01.2008 15:33:54 Info Verifying delta.ini.
Script 02.01.2008 15:33:54 Info Starting DAT update.
Script 02.01.2008 15:33:53 Info Loading update configuration from: PkgCatalog.xml
Script 02.01.2008 15:33:53 Info Extracting PkgCatalog.z.
Script 02.01.2008 15:33:53 Info Verifying PkgCatalog.z.
Script 02.01.2008 15:33:53 Info Downloading PkgCatalog.z.
Script 02.01.2008 15:33:52 Info Searching available updates for DATs.
Script 02.01.2008 15:33:52 Info Verifying DATDet.mcs.
Script 02.01.2008 15:33:52 Info Update list doesn't exist or is empty. Performing one-click update.
Script 02.01.2008 15:33:51 Info Loading update configuration from: Catalog.xml
Script 02.01.2008 15:33:51 Info Extracting catalog.z.
Script 02.01.2008 15:33:50 Info Verifying catalog.z.
Script 02.01.2008 15:33:50 Info Initializing update...
Script 02.01.2008 15:33:50 Info Checking update packages from repository ePO_TELAV01.
Script 02.01.2008 15:33:50 Info Starting update session.
Scheduler 02.01.2008 15:33:45 Info Scheduler: Task [Deployment] is finished
Scheduler 02.01.2008 15:33:45 Info The task Deployment is successful
Script 02.01.2008 15:33:45 Info Closing the update session.
Script 02.01.2008 15:33:45 Info Update Finished
Script 02.01.2008 15:33:45 Info Verifying VS800det.mcs.
Script 02.01.2008 15:33:45 Info Verifying VS800det.mcs.
Script 02.01.2008 15:33:45 Info Checking for software conflicts.
Script 02.01.2008 15:33:44 Info Loading update configuration from: Catalog.xml
Script 02.01.2008 15:33:44 Info Extracting catalog.z.
Script 02.01.2008 15:33:44 Info Verifying catalog.z.
Script 02.01.2008 15:33:44 Info Initializing update...
Script 02.01.2008 15:33:43 Info Checking update packages from repository ePO_TELAV01.
Scheduler 02.01.2008 15:33:43 Info Scheduler: Invoking task [Deployment]...
Agent Subsystem 02.01.2008 15:33:42 Info Next policy enforcement in 5 minutes
Agent Subsystem 02.01.2008 15:33:42 Info Agent finished Enforcing policies
Scheduler 02.01.2008 15:33:42 Info Added a new task Deployment to Scheduler's task list
Management 02.01.2008 15:33:41 Info Enforcing Policies for ePolicy Orchestrator Agent
Management 02.01.2008 15:33:41 Info Enforcing Policies for EPOAGENT3000
Management 02.01.2008 15:33:41 Info Enforcing Policies for EPOAGENT3000META
Management 02.01.2008 15:33:41 Info Enforcing Policies for VIRUSCAN8000
Agent Subsystem 02.01.2008 15:33:41 Info Agent Started Enforcing policies
I get error following lines. What I must do
Script 02.01.2008 15:34:01 Info Update failed to version 5.2.00.
Script 02.01.2008 15:33:59 Info Update failed to version 4.0.5196.
Script 02.01.2008 15:33:59 Info Invalid virus definition files.
On server console I can see this message and when try to update manual start,it finish success.

I'm new user, what I must do.
Thanks...
Murat GUNER