Bug#768193: gdebi-kde: Fails to install package with message "package file does not exist"

[sabbat]

Hello,
The problem is that something adds '--' to the command:
/usr/bin/gdebi-kde -- -n <path to .deb>

Screenshot:
http://imgur.com/a/Ah4H8

Tried to install .deb with command "/usr/bin/gdebi-kde -n <path to
.deb>" and it worked like a charm.

Cheers.