Another stupid Citrix ICAClient issue on Redhat linux:

[leo@thinkleo2 ~]$ /usr/lib/ICAClient/wfcmgr -icaroot /usr/lib/ICAClient
Warning: Missing charsets in String to FontSet conversion
Warning: Missing charsets in String to FontSet conversion
Warning: Unable to load any usable fontset
Error: Aborting: no fontset found

Solution 1 force language C (my favourite for any lang problems):

[leo@thinkleo2 ~]$ export LANG=C

Solution 2 remove charset cjkuni:

[leo@thinkleo2 ~]$ sudo yum remove cjkuni*
Loaded plugins: priorities, product-id, refresh-packagekit, rhnplugin, subscription-manager
Updating Red Hat repositories.
Setting up Remove Process
Resolving Dependencies
--> Running transaction check
---> Package cjkuni-fonts-common.noarch 0:0.2.20080216.1-34.el6 will be erased
---> Package cjkuni-fonts-ghostscript.noarch 0:0.2.20080216.1-34.el6 will be erased
---> Package cjkuni-ukai-fonts.noarch 0:0.2.20080216.1-34.el6 will be erased
---> Package cjkuni-uming-fonts.noarch 0:0.2.20080216.1-34.el6 will be erased
--> Finished Dependency Resolution
Dependencies Resolved
=============================================================================================================================
 Package                    Arch     Version                   Repository                                               Size
=============================================================================================================================
Removing:
 cjkuni-fonts-common        noarch   0.2.20080216.1-34.el6     @anaconda-RedHatEnterpriseLinux-201105101829.i386/6.1   0.0
 cjkuni-fonts-ghostscript   noarch   0.2.20080216.1-34.el6     @rhel-i386-workstation-6                                6.2 k
 cjkuni-ukai-fonts          noarch   0.2.20080216.1-34.el6     @rhel-i386-workstation-6                                 17 M
 cjkuni-uming-fonts         noarch   0.2.20080216.1-34.el6     @anaconda-RedHatEnterpriseLinux-201105101829.i386/6.1    21 M
Transaction Summary
=============================================================================================================================
Remove        4 Package(s)
Installed size: 37 M
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Erasing    : cjkuni-fonts-ghostscript-0.2.20080216.1-34.el6.noarch                                                     1/4
  Erasing    : cjkuni-ukai-fonts-0.2.20080216.1-34.el6.noarch                                                            2/4
  Erasing    : cjkuni-uming-fonts-0.2.20080216.1-34.el6.noarch                                                           3/4
  Erasing    : cjkuni-fonts-common-0.2.20080216.1-34.el6.noarch                                                          4/4
duration: 336(ms)
Installed products updated.
Removed:
  cjkuni-fonts-common.noarch 0:0.2.20080216.1-34.el6         cjkuni-fonts-ghostscript.noarch 0:0.2.20080216.1-34.el6
  cjkuni-ukai-fonts.noarch 0:0.2.20080216.1-34.el6           cjkuni-uming-fonts.noarch 0:0.2.20080216.1-34.el6
Complete!
[leo@thinkleo2 ~]$