Won't format sticks since one week

[EricDHH]

Ubuntu 15.10. amd64

Since one week the usb-creator-gtk crash when formatting an usb key created by usb-creator. Same when trying to format the usb key by disk-manager.

The passwort was requested for permissions, than this appears.

org.freedesktop.DBus.Python.GLib.Error: Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/dbus/service.py", line 707, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/share/usb-creator/usb-creator-helper", line 274, in Format
    part.call_set_flags_sync(boot_dos_flag, no_options, None)
GLib.Error: udisks-error-quark: GDBus.Error:org.freedesktop.UDisks2.Error.Failed: Error setting partition flags on /dev/sde2: Command-line `parted --script "/dev/sde" "set 2 boot off"' exited with non-zero exit status 1: Warnung: Der Treiberdeskriptor sagt, dass die physische Blockgröße 2048 Bytes ist. Linux sagt, dass es 512 Bytes sind.
 (0)

This bug appears on both Ubuntu 15.10 machines here. Tryin to format or remove the partition results to:

Error deleting partition /dev/sde1: Command-line `parted --script "/dev/sde" "rm 1"' exited with non-zero exit status 1: Warnung: Der Treiberdeskriptor sagt, dass die physische Blockgröße 2048 Bytes ist. Linux sagt, dass es 512 Bytes sind.
 (udisks-error-quark, 0)

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: usb-creator-gtk 0.2.67ubuntu1
Uname: Linux 4.1.6-040106-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Mar 12 15:27:41 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-08-16 (208 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: usb-creator
UDisksDump: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: 'udisks'
UpgradeStatus: Upgraded to wily on 2015-10-23 (140 days ago)