Jar files: error while adding files

[RapazP]

file-roller:
  Installed: 3.6.3-1ubuntu4
  Candidate: 3.6.3-1ubuntu4
  Version table:
 *** 3.6.3-1ubuntu4 0
        500 http://archive.ubuntu.com/ubuntu/ raring/main amd64 Packages
        100 /var/lib/dpkg/status

It is no more possible to update ".jar" files, there is "an error occurred while adding files to the archive."

Moreover, I've found this trace with the command "strace file-roller". I'm not sure but I think this is the problem:

mkdir("/home/user/.cache/.fr-kxEaOu/ch/rp/fe/gui/encaissement", 0777) = 0
chmod("/home/user/.cache/.fr-kxEaOu/ch/rp/fe/gui/encaissement", 0700) = 0
symlink("/mnt/hgfs/datas/tmp/fe", "/home/user/.cache/.fr-kxEaOu/ch/rp/fe/gui/encaissement") = -1 EEXIST (File exists)
write(2, "\n** (file-roller:49895): WARNING"..., 77
** (file-roller:49895): WARNING **: Error making symbolic link: File exists
) = 77
lstat("/mnt/hgfs/datas/tmp/fe/fe-gui-2013_L1_C2_1.jar", {st_mode=S_IFREG|0777, st_size=3316255, ...}) = 0
mkdir("/mnt/hgfs/datas/tmp/fe/.fr-bimCn4", 0700) = 0
access("/home/user/.cache/.fr-kxEaOu/ch/rp/fe/gui/encaissement/EncaissementDetailPanel.class", F_OK) = -1 ENOENT (No such file or directory)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.