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Author Topic: Fatal Error - Access of invalid tag  (Read 209 times)

Hope752

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Fatal Error - Access of invalid tag
« on: February 23, 2020, 04:30:09 AM »
Hi there, I'm getting a fatal error "access of invalid tag 9090" (number at end always changes).
This occurs randomly when rendering with forest pack pro. This then crashes 3ds max 2020 sp3
I think it seems to be linked with the density of the forest pack scatter. Often happens with grasses etc. But I have done tests where it will render fine a a particular size and then other times I get the error with the same size. Forest pack is up to date.
Please help.
Chris.

iToo

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Re: Fatal Error - Access of invalid tag
« Reply #1 on: February 23, 2020, 09:20:21 AM »
Hi, what render engine do you use ?

If possible, please post a screenshot of the error message.
That code is not ours, and i'm nt sure what is generating it.

Thanks,
Carlos Quintero
iToo Software

Hope752

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Re: Fatal Error - Access of invalid tag
« Reply #2 on: February 24, 2020, 10:24:58 AM »
I use iray+ in 3ds max 2020.

iToo

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Re: Fatal Error - Access of invalid tag
« Reply #3 on: February 24, 2020, 03:49:40 PM »
Hi, as far as i know, I-Ray is not supported by Forest Pack.
Lightworks team contacted us some time ago, and we'll send to them the Forest SDK and documentation. But i don't know if they wrote some implementation.

Probably the engine is crashing because is handling the Forest geometry as an huge mesh. That's the normal behaviour when Forest instancing is not supported.

Carlos Quintero
iToo Software