> So, I am wondering:
> 
> 1) Am I seeing something unrelated, which just by a funny coincidence
> obscures an error message from the Nasal code that it relevant for me by
> generating tons of warnings?
> 
> 2) Am I seeing something related to what I do, e.g. am I using an
> ill-formed model somewhere that may cause rendering errors, but something
> that isn't really connected with the Nasal code?
> 
> 3) Or can Nasal code somehow cause this behaviour?
Not a real answer to 1)-3) but you can hide this warning with setting the 
environment variable
OSG_NOTIFY_LEVEL=FATAL
to stash warning messages from osg. That leaves some space in your scroll 
buffer for any possible nasal error message.
I've seen this warning occasionally without causing any harm, so ignoring them 
was the best option for me.

Torsten

------------------------------------------------------------------------------
What You Don't Know About Data Connectivity CAN Hurt You
This paper provides an overview of data connectivity, details
its effect on application quality, and explores various alternative
solutions. http://p.sf.net/sfu/progress-d2d
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