Try these Steps:
Run upgrade.bat to update schema to new version:
1- Stop the Symantec Endpoint Protection Manager services;
click in start --> run --> type services.msc --> stop the Symantec Endpoint Protection Manager
2- Go to <local drive>\Program Files\Symantec\Symantec Endpoint Protection Manager\bin\upgrade.bat
Let all upgrade process finish and reopen console Manager . Generally the SEPM services starts after upgrade done.
OR
1) Remove all old packages from SEPM.
- Log into SEPM
- Click in the Tab: Admin > Install Packages and select the old packages with right click and select the option delete;
- After you remove all the old packages, log off from SEPM.
2) Click on Start > Run and type the following command ''services.msc'' to open the services management:
- Stop the service ''Symantec Endpoint Protection Manager''; (Keep it open)
3) Open the following direct <driver:>Program FilesSymantecSymantec Endpoint Protection ManagerBin and execute ''upgrade.bat'';
- Once you executed ''upgrade.bat'' start the service ''Symantec Endpoint Protection Manager'' and log on again into SEPM.;
Now you should be able to export the new packages.
Also, Please check these threads which are related to this Issue.
https://www-secure.symantec.com/connect/forums/cannot-export-client-package-symantec-manager-121
https://www-secure.symantec.com/connect/forums/can-not-export-install-package-sep-12
Edit More......
Hello,
A Number of Threads having the same issue. Check this:
https://www-secure.symantec.com/connect/forums/unable-export-install-package
http://www.symantec.com/connect/forums/unable-export-package
Here is the official Article on this Issue:
http://www.symantec.com/business/support/index?page=content&id=TECH180445
This issue has been resolved in the Upcoming version of SEP 12.1 RU1 MP1.
SEP 12.1 RU1 MP1 version has been Released.
Check the Release Notes / Fixes below:
Release Notes for Symantec Endpoint Protection, Symantec Endpoint Protection Small Business Edition, and Symantec Network Access Control, version 12.1, Release Update 1 MP1
http://www.symantec.com/docs/DOC5564
New fixes and features in Symantec Endpoint Protection 12.1 Release Update 1 Maintenance Patch 1
http://www.symantec.com/docs/TECH187656
Hope that helps!!