Thanks Friedrich,

As far as I can see there is no In Use DLL. I restart the machine. None of my DLLs are loaded at startup. Check Task manager. Run SB8 Installer to install update (DLLs are set to check version/date). At the end Requires Restart.
(I do not restart. Try app. It runs fine).

Repeat all the above. At the end, Requires Restart.


Repeat all the above on a WinXP 32bit PC. Does not need to restart.

OK, I will do some more tests. Comment out DLLs one at a time and see if it is just one.
Just wondered if anything other than "DLL in use" could cause Windows to say Restart Required.??