Comment 3 for bug 783268

there was another problem with the mono ftp stream.
Can you try if this deb fixes the problem?
https://launchpad.net/~jtaylor/+archive/jtaylor/+build/2509336/+files/keepass2_2.15%2Bdfsg-2%2Bppa3~exp1_all.deb
Its a small patch so there should be no problems, but to be save make a backup of your database first.