[Enigmail] Enigmail fails with GnuPG2 + OpenPGP Card

[Stefan Xenon]

Hi!
I use GnuPG2 and tried to generate a key on the OpenPGP Card.
Unfortunately it failed with the error message "unbekannter Fehler bei
Schlüsselgenerierung" (unknown error). The Enigmail console tells me the
following command is executed:

C:\Program Files\GNU\GnuPG2\gpg2.exe --charset utf8 --no-tty --status-
fd 1 --logger-fd 1 --command-fd 0 --with-colons --card-edit

It works on the same system when configuring Enigmail to use GnuPG v1.
So maybe an compatibility issue with GnuPG v2?

Any idea how to solve it?

Regards