strange messagebox during online update

[S. Seide]

Hello,

i've an question regarding the online update of bank accounts. Since
some time i get an messagebox with the following information - but i do
not have any clue what account is responsible for the messagebox:

Title: "Auftrag nicht verfügbar - KMyMoney"
Message: "Der Aktualisierungsauftrag wird von Bank/Konto/Backend nicht
unterstützt."

This one is 100% reproducible at the moment:
In the main menu select "Konto" -> "Alle Konten aktualisieren..."

Now it asks for all the start dates for the online update of my accounts.

After that the strange messagebox appears.

Pressing "OK" i get the (regular) next messagebox asking me to either
start the job execution right now or queue it for later ("Möchten Sie
diesen Auftrag ausführen oder in die Ausgang einreihen?" -> Buttons
"Ausführen" / "Einreihen"). Clicking "Ausführen" (execute) the online
update of all accounts is done as expected (via HBCI).

Do you have any idea what is trigering this error dialog?

KMyMoney 4.6.6 on debian stable


Thanks,
Stefan Seide