StandAlonePackager.exe may be removed from ..\Altiris\Inventory\Standalone\bin folder during on-box upgrade. If it is removed, a new standalone package cannot be created after the upgrade.
To resolve this issue, put the StandAlonePackager.exe that is attached to this article to the ..\Altiris\Inventory\Standalone\bin folder. You can also copy this file from another Notification Server or from the extracted altiris_inventorysolution_8_0_x64.msi.
This issue is resolved with 8.0 HF1 DOC9271