Hello,
It seems the Package you are trying to install with states to Install under either "C:\Program Files" OR "Documents and Settings")
I would suggest you create a new package with these custom settings.
Here are the steps below to perform below:
1) Open Symantec Endpoint Protection Manager,
2) Click on Admin and click Client Install Settings and click on Edit Client Install Settings
3) The screenshot below shows in red the default option "Install to the default installation folder"
4) Select the option below and specify a Folder which is not a reparse point.
Hope that helps!!