The error: QGLContext::makeCurrent（） failed

[linux_CAE]

Dear Friend

I have encountered a problem.
When I update my debian 64bit syetem to support Chinese character.
by using
@apt-get install locales
apt-get install scim
apt-get install scim-pinyin@

and some fonts
then my qt project can not run. the software developed gave the error :

QGLcontext::makeCurrent() failed

Could you tell me what is the possible reason.
My software is a graphic project based on Opencascad and OpenGL, it is a 3D graphic program.

Many thanks.