it indecates that the SEPM has not re-registered itself witht the live update compoment as to what to download. please follow the below steps to fix this. if it still fails then post the log.liveupdate and sesmLu.log
Uninstall Liveupdate
Re-register Liveupdater with SEPM by following the procedure
* Open a command prompt window, then browse to:
For 32 bit Operating System
* C:\Program Files\Symantec\Symantec Endpoint Protection Manager\bin
and for the 64 bit
* C:\Program Files(X86)\Symantec\Symantec Endpoint Protection Manager\bin
* Execute lucatalog -cleanup
Reinstall Liveupdate
* Open a command prompt window, then browse to:
For 32 bit Operating System
* C:\Program Files\Symantec\Symantec Endpoint Protection Manager\bin
and for the 64 bit
* C:\Program Files(X86)\Symantec\Symantec Endpoint Protection Manager\bin
Execute lucatalog -forcedupdate
* Run LiveUpdate from the console or execute LUALL.exe to verify that there are no errors.