Problem beim Import von Schlüsseln in Thunderbird/Enigmail

Hallo zusammen,

ich habe meinen Rechner neu gemacht und nun auch die neuste Version von Thunderbird (2.0.0.4) installiert. Nach Installation von Enigmail habe ich versucht, Schlüssel zu importieren (als *.asc-Dateien über -> OpenPGP -> Schlüssel verwalten -> Datei -> importieren).

Der erste Satz des aufpoppenden Fensters liest sich auch gut:
Die Schlüssel wurden erfolgreich importiert

Allerdings folgt dann eine ganze Latte an Fehlermeldungen:

gpg: key C4E710CB: User <[email protected]> not changed
gpg: can't open `--charset': No such file or directory
gpg: can't open `utf8': No such file or directory
gpg: can't open `--batch': No such file or directory
gpg: can't open `--no-tty': No such file or directory
gpg: can't open `--status-fd': No such file or directory
gpg: can't open `2': No such file or directory
gpg: can't open `--import': No such file or directory
gpg: key C4E710CB: User <[email protected]> not changed
gpg: can't open `utf8': No such file or directory
gpg: can't open `--batch': No such file or directory
gpg: can't open `--no-tty': No such file or directory
gpg: can't open `--status-fd': No such file or directory
gpg: can't open `2': No such file or directory
gpg: can't open `--import': No such file or directory
gpg: key C4E710CB: User <[email protected]> not changed
gpg: can't open `--batch': No such file or directory
gpg: can't open `--no-tty': No such file or directory
gpg: can't open `--status-fd': No such file or directory
gpg: can't open `2': No such file or directory
gpg: can't open `--import': No such file or directory
etc. pp.

Nach Schließen des Fensters erscheinen die importierten Schlüssel nicht in der Liste. Leider habe ich keine Ahnung, was ich falsch mache. Könnte mir jemand einen Tip geben, woran es hakt? Danke schonmal!

Gruß, Lily