GLW_StartOpenGL() - could not load OpenGL subsystem ( SLAC )
Since there were several journals and forum topics about it, I decided to provide the solution for zeh drama.
!! Before reading this tutorial make sure you already installed the latest drivers for your graphic card. !!
Follow the instruction and your problem will be fixed soon.
Step 1: Open the Avira configuration, then do "Extras -> Configuration" and deactivate the automatic updates.