After upgrading exo from 0.3.102-r1 to 0.3.104, mounting of my USB disks doesn't work (downgrading exo solves this).

When clicking the disc in Thunar or executing "exo-mount -d /dev/sdb1", it shows:

Failed to mount "493M Removable Volume". mount: wrong fs type, bad option, bad superblock on /dev/sdb1, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail  or so.

And dmesg shows "FAT: IO charset ANSI_X3.4-1968 not found" (I use unmodified locale)

Some info about my system (as shown by paludis)...
Compiler:
    CXX:         i686-pc-linux-gnu-g++ 4.3.2
    CXXFLAGS:     -O2 -march=pentium-m -pipe -msse2 -fomit-frame-pointer
    LDFLAGS:     -Wl,-O1
Libraries:
    C++ Library: GNU libstdc++ 20080827
System:
    Linux prestigio 2.6.30-gentoo-r6-gf3575b3 #1 Fri Sep 18 12:41:12 CEST 2009 i686 Intel(R) Pentium(R) M processor 1.73GHz GenuineIntel GNU/Linux

Exo is built with HAL, libnotify and python support.
My HAL version is 0.5.12_rc1-r8.

If you need more information, ask me. Thanks for Your work.