Note that I had previously upgraded Backup to 3.10.2 and ran PHP scanner in version 2.6.0 without any problems. Then upgarded DocImport and ran scanner OK. The Admin Tools was the last I updated so suspect it may NOT be FOF update related. If that helps.
Other thing of note is that when installing these updates the Restore Point completes but then a blank page is presented (after all 3 updates) instead of going to the component page. Refreshing the blank page gives one the option of going to the Joomla Control Panel. Then one can get to the updated component page. The components do appear to have been successfully installed as far as I can tell (currently).