Error on Render. Un-Recoverable

[danieljhatton]

Sometimes I get this error after I have hit render very early in the Lightcash Process.

Unknown class: SuperID =0x200, Class ID =(0x0,0x0)

Hitting OK returns to the 'Locked Up' Lightcash. Just wondering if anyone else has experienced this. Also, the last Autoback file is always corrupted after this error. File renders fine when I have recovered Autoback back to the same stage I was at with no changes.

Thanks a mill.

[vlado]

It is the first time I actually see this error. Does the error come up during the light cache calculations?

Best regards,
Vlado