After update to v4.4.40.0 transfer channels not possible

[elvesoft]

Hello all,

Sorry for the English language.
My problem is as follows:
Last weekend I got the message for a firmware update to Pv4.4.40.0.
I continued and installed the new firmware. No problem.
Now I want to make a backup on a USB stick of all my setup channels (transfer channels lists).
I put in a newly formatted USB stick (FAT32).

But whatever I try the 'Transfer Channels list' remains dimmed and cannot be selected.
What could be the problem? Please help, any advice will be appreciated.

Greetings

[Spielzimmer]

Copy an image to the stick, is it visible on the TV?

If yes, the stick ist ok and usable.

[elvesoft]

Copied a picture to the USB stick. Yes it is visible on TV.
So stick is OK.

But still the menu option 'Transfer All Channels Lists' remains dimmed and cannot be selected.

[Pretch]

Läuft grad eine Aufnahme oder irgendwas?

[elvesoft]

No, no recording is running.
TV is in normal use.

[elvesoft]

Has no one any idea to fix this problem???