Qvfb: semop lock failure identifier removed

To solve this problem (when running qvfb on X11), here is some info from
Site:

Http://www.qtforum.org/article/15411/semop-lock-failure-identifier-removed-error.html

Title:

<Semop lock failure identifier removed error>

I m building embedded QT application to run on qvfb (Virtual Frame Buffer ).
After building the application successfully I m running the application on qvfb.

I execute $ qtdir/tools/qvfb &
After that I execute my application./appname-qws

But I m getting the following error.
"Semop
Lock
Failure
Identifier
Removed
"

Can u please help me?

-------------

You shoshould delete the file/tmp/qtembedded-rootusername/QtEmbedded-0.

It works.
I don't know how.

Is anybosy have idea about this.

Thanking you,
Sumit

---------------
QT/e checks whether the temporary directory exists, is writeable and
Has the permissions set right, otherwise it refuses to work...

#######################

So what I do:

[Root @ Lyl movie] # ls/tmp/qtembedded-rootusername/QtEmbedded-0
Ls:/tmp/qtembedded-rootusername/QtEmbedded-0: no such file or directory

[Root @ Lyl movie] # ls/tmp/qtembedded -*
Qtembedded-0/qtembedded-root/
[Root @ Lyl movie] # ls/tmp/qtembedded-root/
[Root @ Lyl movie] # ls/tmp/qtembedded-0/QtEmbedded-0
Fire. MNG main. MoC movie_rs2map.mng movies. Pro
Main. cpp main. O movies text
Main. cpp ~ Makefile movies.doc trolltech.gif
[Root @ Lyl movie] # rm-F/tmp/qtembedded-0/QtEmbedded-0 /*
RM: cannot remove '/tmp/qtembedded-0/*': Not a directory
[Root @ Lyl movie] # rm-F/tmp/qtembedded-0/QtEmbedded-0
[Root @ Lyl movie] # qvfb-width 240-height 320 &
[1] 9099
[Root @ Lyl movie] # using display 0

[Root @ Lyl movie] #./movies-qws
Connected to vfb server: 240x320x32
Status-1 ************* here qvfb runs OK !! **************

In addition, http://www.vision.ee.ethz.ch/computing/sepp-irix/qt-2.3.1-mo/install-qws.html
Here is an official document.