I can confirm that a downgrade to the 13.10 Saucy packages did the trick an Kleopatra now works again correctly. I had to perform the following downgrades:
gpgsm:amd64 2.0.22-3ubuntu1 -> 2.0.20-1ubuntu3 libgpgme11:amd64 1.4.3-0.1ubuntu3 -> 1.4.2-0.1ubuntu3 libgpgme++2:amd64 4:4.12.95-0ubuntu1 -> 4:4.11.2-0ubuntu1 libqgpgme1:amd64 4:4.12.95-0ubuntu1 -> 4:4.11.2-0ubuntu1 scdaemon:amd64 2.0.22-3ubuntu1 -> 2.0.20-1ubuntu3
I can confirm that a downgrade to the 13.10 Saucy packages did the trick an Kleopatra now works again correctly. I had to perform the following downgrades:
gpgsm:amd64 2.0.22-3ubuntu1 -> 2.0.20-1ubuntu3
libgpgme11:amd64 1.4.3-0.1ubuntu3 -> 1.4.2-0.1ubuntu3
libgpgme++2:amd64 4:4.12.95-0ubuntu1 -> 4:4.11.2-0ubuntu1
libqgpgme1:amd64 4:4.12.95-0ubuntu1 -> 4:4.11.2-0ubuntu1
scdaemon:amd64 2.0.22-3ubuntu1 -> 2.0.20-1ubuntu3