[Pw_forum] about install error

[Mahmoud Payami]

Dear  TKPWSCF users,

The required packages:
Tcl+Tk>=8.3
Itcl+Itk>=3.1
Iwidgets>=3.0

have  already been installed but when I try to run "tkpwsc", the following
happens:
-------------------------
[mahmoud at localhost TkPwscf-0.3.2]$ tkpwscf
Error in startup script: can't find package tclu
    while executing
"package require tclu"
    (file "/home/mahmoud/PWSCF/TkPwscf-0.3.2/lib/Guib-0.0.6/guib.tcl" line
72)
    invoked from within
"source /home/mahmoud/PWSCF/TkPwscf-0.3.2/lib/Guib-0.0.6/guib.tcl"
    ("package ifneeded" script)
    invoked from within
"package require Guib 0.0.6"
    (file "/home/mahmoud/PWSCF/TkPwscf-0.3.2/tkpwscf" line 45)
[mahmoud at localhost TkPwscf-0.3.2]$
-------------------------------
Should I find somewhere the file "tclu" in addition to the required
packages?
Comments are highly appreciated.

Best regards,
                     Mahmoud