error while loading shared libraries libExtensionSystem.so.4 for qtreator

[msauer751]

Hi,

I use xubuntu version 20.10 and I want to manual install Qt with online installer from qt.

If I try to start the new installed QtCreator I will get the error message:

error while loading shared libraries libExtensionSystem.so.4: cannot open shared object file: No such file or directory

I installed Qt in /opt/Extern/Entwicklung/Qt/ and set the variable

export LD_LIBRARY_PATH=/opt/Extern/Entwicklung/Qt/Tools/QtCreator/lib/qtcreator/
export PATH=/opt/Extern/Entwicklung/Qt/Tools/QtCreator/bin:$PATH

But qtcreator couldn't be started.

Where is the problem (or my mistake)? I think to set LD_LIBRAY_PATH should enough.

Thank you for your help
BR
martin

[msauer751]

Ok. I found the error. I set the g+s mode on my installation directory. After I removed the setguid bit I can start qtcreator without any problems.

BR
martin

[jsulm]

This post is deleted!