it is not safe to use pixmap outside the gui thread

[Altera_Forum]

Hello  

 I am new to linux i had try to install quartus 12.1 web edition using altera installer but after downloading while installing it shows the error "it is not safe to use pixmap outside the gui thread". as i new to linux i didn't understand what that error mean please tell solution for this.  waiting for your response ........ thank you

[Altera_Forum]

This is an message displayed by the PYQT framework we use for the installer itself, and it can safely be ignored. 

 We will release a new Installer in V13.0, hopefully with this and other installation issues fixed/improved. We have a beta of this new installer for V12.1sp1, and it you want to try it, send me a direct message, and I will give you instructions on how to access it.  Thanks,