renaming of directory brings up strange error window but works

my Music collection is on a internal NTFS formated drive, mounted to /pub/Musik

if i change the directories name through F2, change something i get this pop-up window message:

Datei nicht gefunden - File not found

there is only the possiblility to click "OK", and the pop-up window closes.
the change is made properly and works as expected.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gnome-commander 1.2.8.17-1
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri May 2 11:34:07 2014
ExecutablePath: /usr/bin/gnome-commander
InstallationDate: Installed on 2014-03-16 (46 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140225)
SourcePackage: gnome-commander
UpgradeStatus: No upgrade log present (probably fresh install)