Thanks for the suggestion.  I checked the scene files and they all have 
open permission. Also, the render will run ok if I turn off 
anti-aliasing, or eliminate most of the objects, or zoom the camera out 
so that the objects only take up a small proportion of the image area. 
So it would seen that the component files can all be accessed okay.  The 
scene consists of 15 mesh2 objects, 14 grapes and a grape stem.  The 
grapes stem is textured with a uv map, the grapes are textured with 
media interiors. The stem renders okay by itself.  The problems seem to 
start when I specify anti-aliasing with too many objects or over too 
much of the image area.

All other things being equal, how does specifying anti-aliasing increase 
the demand on resources.  I would have guessed it just requires more 
computations. Does it require more memory?

N Shomber wrote:

> "Jim Charter" wrote:
> 
>>Using V3.5 RC 5 under w2k on an athlon processor I get the following
>>exception.  Can anyone suggest what might be the cause?  -Jim
>>
> 
> If the system is using NTFS, perhaps POVRay does not have permissions to
> access/modify/view/etc. the source file or if this happens every render, one
> of its own files.
> 
> If this is the case change the security settings on the related files to
> slowly give System or User more permissions or just give Everybody full
> permissions on the file.
> 
> N Shomber
> WinXP Pro
> Athlon 1500 XP
> POVRay 3.5 RC5
> 
> 
>

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