Dear Hongsheng: In my opinion, you have two choices to solve this problem easily in such a case. First, try to use binary PWgui, if you are using x86_64 Linux OS. Second, please install ActiveTcl 8.4 ( it will install in /opt directory ), then open the bash script file pwgui by any text editor and change the commands: $PWGUI/bin/itkwish $PWGUI/pwgui.tcl&nbsp; (Line 74) and tclsh $PWGUI/pwgui.tcl (Line 79) to  /opt/xxxxx/bin/wish $PWGUI/pwgui.tcl and /opt/xxxxx/bin/tclsh $PWGUI/pwgui.tcl respectively, where xxxxx means the directory name of installed ActiveTcl. <pre> ----------------------------------------------------------------- GAO Zhe CMC Lab, MSE, SNU, Seoul, S.Korea At&nbsp;2011-06-09&nbsp;02:00:59，"Hongsheng&nbsp;Zhao"&nbsp;&lt;zhaohscas@yahoo.com.cn&gt;&nbsp;wrote:

&gt;Hi&nbsp;all,

&gt;

&gt;I&nbsp;use&nbsp;the&nbsp;following&nbsp;following&nbsp;command&nbsp;to&nbsp;obtain&nbsp;the&nbsp;svn&nbsp;version&nbsp;of&nbsp;espresso:

&gt;

&gt;werner@debian:~$&nbsp;svn&nbsp;checkout&nbsp;

&gt;svn://scm.qe-forge.org/scmrepos/svn/q-e/trunk&nbsp;espresso

&gt;

&gt;then&nbsp;I&nbsp;cd&nbsp;to&nbsp;the&nbsp;directory&nbsp;of&nbsp;pwgui:

&gt;

&gt;werner@debian:~$&nbsp;cd&nbsp;~/espresso/espresso/GUI/PWgui

&gt;

&gt;and&nbsp;now,&nbsp;typing&nbsp;the&nbsp;command&nbsp;./pwgui&nbsp;to&nbsp;run&nbsp;it&nbsp;and&nbsp;meet&nbsp;the&nbsp;following&nbsp;

&gt;messages:

&gt;

&gt;--------

&gt;werner@debian:~/espresso/espresso/GUI/PWgui$&nbsp;./pwgui

&gt;

&gt;&nbsp;&nbsp;==================================================

&gt;&nbsp;&nbsp;&nbsp;This&nbsp;is&nbsp;PWgui&nbsp;version:&nbsp;4.3

&gt;&nbsp;&nbsp;--------------------------------------------------

&gt;

&gt;

&gt;&nbsp;&nbsp;PWgui:&nbsp;using&nbsp;the&nbsp;system&nbsp;default&nbsp;"tclsh"&nbsp;interpreter

&gt;

&gt;&nbsp;&nbsp;PWGUI&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:&nbsp;/home/werner/espresso/espresso/GUI/PWgui

&gt;

&gt;&nbsp;&nbsp;&nbsp;&nbsp;It&nbsp;seems&nbsp;you&nbsp;are&nbsp;using&nbsp;CVS&nbsp;version&nbsp;of&nbsp;PWgui/Quantum-Espresso.

&gt;

&gt;&nbsp;&nbsp;&nbsp;&nbsp;For&nbsp;the&nbsp;CVS&nbsp;version&nbsp;you&nbsp;need&nbsp;to&nbsp;do&nbsp;the&nbsp;following:

&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;cd&nbsp;into&nbsp;GUI/PWgui&nbsp;directory,&nbsp;and

&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;execute:&nbsp;make&nbsp;cvsinit

&gt;--------

&gt;

&gt;This&nbsp;is&nbsp;a&nbsp;svn&nbsp;version,&nbsp;why&nbsp;it&nbsp;give&nbsp;me&nbsp;the&nbsp;above&nbsp;informations&nbsp;on&nbsp;'CVS&nbsp;

&gt;version'?

&gt;

&gt;Regards.

&gt;--&nbsp;

&gt;

&gt;Hongsheng&nbsp;Zhao&lt;zhaohscas@yahoo.com.cn&gt;

&gt;School&nbsp;of&nbsp;Physics&nbsp;and&nbsp;Electrical&nbsp;Information&nbsp;Science,

&gt;Ningxia&nbsp;University,&nbsp;Yinchuan&nbsp;750021,&nbsp;China

&gt;

&gt;_______________________________________________

&gt;Pw_forum&nbsp;mailing&nbsp;list

&gt;Pw_forum@pwscf.org

&gt;http://www.democritos.it/mailman/listinfo/pw_forum

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