The following error is returned when trying to add a basemap or unpack a layer package.
"Error Loading Package Contents"
Due to a redirected profile or My Documents folder, the hard-coded paths in the file handler do not have a location to properly unpack. The file handler does not see the redirected paths without it being manually changed.
The error can also occur if the destination folder does not have write permissions.
This hard-coded behavior is a known issue.