Problem Summary

OpenGL initialization process is failed on some PCs like Panasonic Let’s Note etc, which have “Mobile Intel 4 Series Express Chipset Family”.

This problem seems not to be only for STELLARWINDOW but for other general applications based on OpenGL.

Cause of the problem

This problem seems to be caused by potential bugs of ig4dev32.dll ( Intel Media Accelarator Driver ).

Way to avoid the problem

Rename C:/windows/system32/ig4dev32.dll to another name ( like ig4dev32.bak.dll. )

ig4dev32.dll has read-only property, so you should:

(1) Right click “ig4dev32.dll” -> property → release “read-only property”  OR

(2) Right click “ig4dev32.dll” -> property -> security -> detailed -> Administrators -> display -> Administrators -> Edit -> Check “FULL CONTROL” -> Click “OK”

to rename the dll.

Notice

We confirmed that it may be safe to rename ig4dev32.dll, however, it remains a possibility to cause a system problem. Please note that we can not compensate any system problems or damages caused by the renaming.