Hi ?

There isn't any way to know what settings are provoking these errors, the
best thing you can do is compile a debug version of the OSG and then setup
into the AutoTransform traverse method to figure out what maths is being
invoked and when the errors are occurring.

The only thing I can add is that osgText::Text has support for rotating to
screen and automatically scaling that for most purposes will make
osg::AutoTransform rendundent.  I would try to just use osgText::Text's
support for scaling and rotating and ditch the osg::AutoTransform. You'll
get better performance too.

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