Common problems with version 0.12

To remove 90% of the common problems like strange graphics effects after an update to 0.12, or stars rendered as triangles, upside-down sky, strange text characters, off-center or distorted appearance of the sky sphere and other effects:

1) Make sure you have the LATEST DRIVERS for your graphics card installed.

2) Delete config.ini. Some LEFT-OVER ENTRIES may interfere with recent changes.

3) Esp. on OLDER HARDWARE: Try "No OpenGL2 mode" (may also be called "fallback mode").
    --- if this helps, please file a bug report and ATTACH THE LOG FILE log.txt to let us improve startup diagnostics to immediately launch without attempting OpenGL2 mode which later caused problems.
Really ancient systems (built around 2002) may have to use older versions (0.12.0 or 0.11.*) of Stellarium.

4) MISSING MOUSE? There are recent reports about missing mouse cursor on Windows 8. Switching off mouse trails may help!

5) In any case, when all this does not work and you still need to report a problem,
PLEASE ATTACH THE LOG FILE log.txt TO YOUR BUG REPORT!