osgb model displayed in inspector not showing up in script

[pitbool]

Hi,

We have an osgb model in which we have customized some animations from 3DS max. The file size is 733 MB.

We can view this file in the inspector, but it is not loading up in the simplest possible vizard script below:

import viz

viz.go()

#viz.add('piazza.osgb')
viz.add('Zone3_FishTest1.osgb')

Any thoughts on what might be the problem?

Thank you.