# Jumping back and forth from 1.45 to 1.09

**URL:** <https://forums.chaos.com/t/jumping-back-and-forth-from-1-45-to-1-09/4606>\
**Category:** General\
**Created:** [July 27, 2004, 7:39pm UTC](https://forums.chaos.com/t/jumping-back-and-forth-from-1-45-to-1-09/4606 "2004-07-27T19:39:29Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![GeneCrucean](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/genecrucean/32/67579_2.png) [@GeneCrucean](https://forums.chaos.com/u/GeneCrucean)\
**Post date:** [July 27, 2004, 7:39pm UTC](https://forums.chaos.com/t/jumping-back-and-forth-from-1-45-to-1-09/4606/1 "2004-07-27T19:39:29Z")

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Has anyone had problems with going back and forth from 1.45 to 1.09? I’m wondering if saving a file with 1.45 and opening it with 1.09 is a no no. A couple of our scene’s crash like a mofo now and I’m wondering if they are corrupted.

Thanks guys

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**Author:** ![RErender](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/rerender/32/42964_2.png) [@RErender](https://forums.chaos.com/u/RErender)\
**Post date:** [July 27, 2004, 8:18pm UTC](https://forums.chaos.com/t/jumping-back-and-forth-from-1-45-to-1-09/4606/2 "2004-07-27T20:18:04Z")

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There are usually backwards compatibility issues with the new releases, forward is smooth for the most part.

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**Author:** ![GeneCrucean](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/genecrucean/32/67579_2.png) [@GeneCrucean](https://forums.chaos.com/u/GeneCrucean)\
**Post date:** [July 27, 2004, 9:32pm UTC](https://forums.chaos.com/t/jumping-back-and-forth-from-1-45-to-1-09/4606/3 "2004-07-27T21:32:28Z")

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Right, well I know usually but has anyone had specific problems with it?

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**Author:** ![Dynedain](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/dynedain/32/55769_2.png) [@Dynedain](https://forums.chaos.com/u/Dynedain)\
**Post date:** [July 27, 2004, 9:41pm UTC](https://forums.chaos.com/t/jumping-back-and-forth-from-1-45-to-1-09/4606/4 "2004-07-27T21:41:38Z")

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my only problem has been one particular file that opens fine in 1.09 but not 1.45.7 (wont merge either)

That and if you install 1.09 over 1.45, you’ll get error messages on max start about Vray Fur, Vray Plane, and one other i cant remember off the top of my head. They’re safe to ignore though.

\*edit\*

I see you mean going from a 1.45 file to a 1.09…that could cause problems because there are a lot of new settings in materials and render settings that won’t show up in 1.09…hence why max is gonna choke on it

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**Author:** ![nlo](https://avatars.discourse-cdn.com/v4/letter/n/97f17d/32.png) [@nlo](https://forums.chaos.com/u/nlo)\
**Post date:** [July 28, 2004, 7:28pm UTC](https://forums.chaos.com/t/jumping-back-and-forth-from-1-45-to-1-09/4606/5 "2004-07-28T19:28:21Z")

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well i turned on the vray frame buffer in 1.45 and then rendered  
that scene in 1.09 -and surprise: no max frame buffer showed up when hitting the render button…

so i guess it’s better not to go backwards…