This break would prevent us continuing to concatenate transforms if the scene isn't a sampled one, and the call to ( current->numTransformSamples() > 1 ) would crash if we didn't break. I think we need something like this :

```
if( const SampledSceneInterface *sampledCurrent = runTimeCast<const SampledSceneInterface *>( current ) )
{
    if( sampledCurrent->numTransformSamples() > 1 )
    {
        m_static = false;
    }
}
else
{
    m_static = false;
}
```