The following error message while resuming a site:
Failed to link file file system template for service siteinfo. Error 1.
Standard Out:  Standard Error: ["cp: cannot overwrite non-directory
`/home/virtual/<siteN>/fst/usr/lib/X11' with directory
Sites imported from version 4.x have the following entry in virtual file-system as link:
/home/virtual/<siteN>/fst/usr/lib/X11. In version 10.x the entry is present as directory.When such site is resumed, system is unable to override the entry.
To solve this, link /home/virtual/<sitename>/fst/usr/lib/X11 should be deleted after site import and /home/virtual/<siteN>/fst/usr/lib/X11 directory should be added.