Endpoint Protection

I am deploying SEP via GPO and it is not installing over SAV10. I ran the batch file locally and SEP installed successfully. What does 'MainEngineThread is returning 1619' mean? I have this error on all the machines running on Windows XP. Thanks for the help in advance.

MACHINE A
=== Verbose logging started: 6/16/2010  11:01:42  Build type: SHIP UNICODE 4.05.6001.00  Calling process: C:\WINDOWS\system32\msiexec.exe ===
MSI (c) (A8:B0) [11:01:42:489]: Resetting cached policy values
MSI (c) (A8:B0) [11:01:42:489]: Machine policy value 'Debug' is 0
MSI (c) (A8:B0) [11:01:42:489]: ******* RunEngine:
           ******* Product: \\hyd-sep\SEP_Packages\11.6\32Bit\My Company_Manila\Symantec AntiVirus.msi
           ******* Action:
           ******* CommandLine: **********
MSI (c) (A8:B0) [11:01:42:521]: Client-side and UI is none or basic: Running entire install on the server.
MSI (c) (A8:B0) [11:01:42:521]: Grabbed execution mutex.
MSI (c) (A8:B0) [11:01:42:631]: Cloaking enabled.
MSI (c) (A8:B0) [11:01:42:631]: Attempting to enable all disabled privileges before calling Install on Server
MSI (c) (A8:B0) [11:01:42:647]: Incrementing counter to disable shutdown. Counter after increment: 0
MSI (s) (C0:D8) [11:01:42:679]: Running installation inside multi-package transaction \\hyd-sep\SEP_Packages\11.6\32Bit\My Company_Manila\Symantec AntiVirus.msi
MSI (s) (C0:D8) [11:01:42:679]: Grabbed execution mutex.
MSI (s) (C0:E0) [11:01:42:679]: Resetting cached policy values
MSI (s) (C0:E0) [11:01:42:679]: Machine policy value 'Debug' is 0
MSI (s) (C0:E0) [11:01:42:679]: ******* RunEngine:
           ******* Product: \\hyd-sep\SEP_Packages\11.6\32Bit\My Company_Manila\Symantec AntiVirus.msi
           ******* Action:
           ******* CommandLine: **********
MSI (s) (C0:E0) [11:01:43:611]: Note: 1: 2203 2: \\hyd-sep\SEP_Packages\11.6\32Bit\My Company_Manila\Symantec AntiVirus.msi 3: -2147287035
MSI (s) (C0:E0) [11:01:43:611]: MainEngineThread is returning 1619
MSI (s) (C0:D8) [11:01:43:642]: User policy value 'DisableRollback' is 0
MSI (s) (C0:D8) [11:01:43:642]: Machine policy value 'DisableRollback' is 0
MSI (s) (C0:D8) [11:01:43:642]: Incrementing counter to disable shutdown. Counter after increment: 0
MSI (s) (C0:D8) [11:01:43:642]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\Rollback\Scripts 3: 2
MSI (s) (C0:D8) [11:01:43:642]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\Rollback\Scripts 3: 2
MSI (s) (C0:D8) [11:01:43:642]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\InProgress 3: 2
MSI (s) (C0:D8) [11:01:43:642]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\InProgress 3: 2
MSI (s) (C0:D8) [11:01:43:642]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied.  Counter after decrement: -1
MSI (s) (C0:D8) [11:01:43:642]: Restoring environment variables
MSI (c) (A8:B0) [11:01:43:642]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied.  Counter after decrement: -1
MSI (c) (A8:B0) [11:01:43:642]: MainEngineThread is returning 1619
=== Verbose logging stopped: 6/16/2010  11:01:43 ===

MACHINE B

=== Verbose logging started: 6/16/2010  3:17:54  Build type: SHIP UNICODE 3.01.4001.5512  Calling process: C:\WINDOWS\system32\msiexec.exe ===
MSI (c) (38:40) [03:17:54:893]: Resetting cached policy values
MSI (c) (38:40) [03:17:54:893]: Machine policy value 'Debug' is 0
MSI (c) (38:40) [03:17:54:893]: ******* RunEngine:
           ******* Product: \\hyd-sep\SEP_Packages\11.6\32Bit\My Company_Manila\Symantec AntiVirus.msi
           ******* Action:
           ******* CommandLine: **********
MSI (c) (38:40) [03:17:54:909]: Client-side and UI is none or basic: Running entire install on the server.
MSI (c) (38:40) [03:17:54:909]: Grabbed execution mutex.
MSI (c) (38:40) [03:17:55:080]: Cloaking enabled.
MSI (c) (38:40) [03:17:55:080]: Attempting to enable all disabled priveleges before calling Install on Server
MSI (c) (38:40) [03:17:55:111]: Incrementing counter to disable shutdown. Counter after increment: 0
MSI (s) (4C:5C) [03:17:55:142]: Grabbed execution mutex.
MSI (s) (4C:6C) [03:17:55:142]: Resetting cached policy values
MSI (s) (4C:6C) [03:17:55:142]: Machine policy value 'Debug' is 0
MSI (s) (4C:6C) [03:17:55:142]: ******* RunEngine:
           ******* Product: \\hyd-sep\SEP_Packages\11.6\32Bit\My Company_Manila\Symantec AntiVirus.msi
           ******* Action:
           ******* CommandLine: **********
MSI (s) (4C:6C) [03:17:56:183]: Note: 1: 2203 2: \\hyd-sep\SEP_Packages\11.6\32Bit\My Company_Manila\Symantec AntiVirus.msi 3: -2147287035
MSI (s) (4C:6C) [03:17:56:183]: MainEngineThread is returning 1619
MSI (c) (38:40) [03:17:56:199]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied.  Counter after decrement: -1
MSI (c) (38:40) [03:17:56:199]: MainEngineThread is returning 1619
=== Verbose logging stopped: 6/16/2010  3:17:56 ===

ERROR_INSTALL_PACKAGE_
 OPEN_FAILED             1619   This installation package could not be 
                                opened. Verify that the package exists and 
                                that you can access it, or contact the 
                                application vendor to verify that this is 
                                a valid Windows Installer package.

Error-1619 Means---->    This installation package could not be opened. Verify that the package exists and that you can access it, or contact the application vendor to verify that this is a valid Windows Installer package.

when you shared the package; make sure you have assigned the appropirate permission for the assigned package in you GPO.
what is the permission set as of now?
give domain computers access
check this doc will help u out
home.fnal.gov/~jklemenc/dl/AD-MSI-for-Dummies.doc

Thanks guys. I got this working so its just with the permission.