Getting "Incomplete package, policy can not be enabled." when trying to apply changes in the RS Agent Local Mode Prerequisite Package Install polacy. This might be seen in other polacies too.
2nd message: "The task has been saved successfully, however it has not been enabled."
The FRM package is not set up correctly in the Notification Server.
Download the Package to the “Recovery Agent Local Mode Prerequisite Package Folder”. There is usually a template version which is only a few k in size but the correct one should be around 5MB. Downloading the arlfile2106.frm to the correct location on the Notification Server helps resolve the issue.