It's always a nice idea to do a clean install, get rid of the old rubbish. This is not aimed at anyone here, but we use a term at work known as a BCAK error, i.e. the error is somewhere 'Between Chair And Keyboard'. Still makes me snigger when I see it entered into some of the log files :-)

----------

Toolset: Blender, GIMP, Indigo Render, LuxRender, TopMod, Knotplot, Ivy Gen, Plant Studio.