IT8 Auto calibration error

[Shekwork]

Trying to do an Auto IT8 calibration. It completes and gives me a delta of 1.1 or so. When I say save it asks to overwrite the existing profile. I say yes and get this error: see attachment

Running Windows 10
Epson Expression 10000xl
latest silverfast

[LSI_Ketelhohn]

Dear user,

This can happen when SilverFast can not save or replace the profile.

Make sure you are logged in as an administrator. The calibration process requires administrative rights because it has to access system folders.

If that does not help try activating the custom ICC profile names in the Preferences' Auto tab.
SilverFast will then ask where to save the file.
Try saving it to the Desktop and then move it manually into the systems' color management folder.
On Windows this would be:
C:/Windows/System32/Spool/drivers/color
Afterwards select the saved profile in the Preferences' CMS tab for the input profile.

Kind regards,
Arne