Is the FlyoutMenuSettings directory and keys supposed to be created by Start11 or existing on the system?
You can use the following
https://cdn.stardock.us/support/uploads/Flyout.zip
to add the registry entries:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FlyoutMenuSettings]
"ShowSleepOption"=dword:00000001
"ShowHibernateOption"=dword:00000001
"ShowLockOption"=dword:00000001
Again, log out \ in and try again, please.
Sean Drohan
Stardock Product Lifecycle Manager