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Max undo function demolishing mesh normals? Bug?

whoelseisbored
whoelseisbored
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whoelseisbored
So I've come across this problem a couple of times in the past. I don't think I ever actually managed to fix it, I think it may have just have gone away. It was however on a different version of Max.

Basically, I'm in the process of optimizing my mesh and after collapsing two or more verts together and deciding against it, I would click undo... this results in my mesh going nuts. See before and after images below...

undoError.JPG

Anyone got any ideas?

Edit: It also happens with target weld prior to undo.
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  • Goeddy
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    Goeddy greentooth
    may be related to old max version.
    but yes this happens, undo is not perfect.
    especialy with applying certain modifiers, there is no way back.
    so save often :D some stuff undo does is not fixed as easily as broken normals.
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  • whoelseisbored
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    whoelseisbored
    Goeddy wrote: »
    may be related to old max version.
    but yes this happens, undo is not perfect.
    especialy with applying certain modifiers, there is no way back.
    so save often :D some stuff undo does is not fixed as easily as broken normals.

    I've only got an editable poly on it as well :(

    Ahh well. Good job ive got incremental saves :) Thanks for replying.
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  • Kwramm
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    Kwramm interpolator
    I sometimes have this when I bring meshes over to max from maya. These meshes stay bugged - i.e. you can fix the undo issues but it may just keep happening again and again.
    I usually just export from max as obj and import the mesh again - in most cases the mesh remains undo bug free from then on.
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  • cptSwing
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    cptSwing polycounter lvl 11
    Undo as such is bugged. you learn to work around it through the following steps:

    - perform more or less exotic action in max (ranging from welding verts with 'preserve uvs' to changing settings in your path deform modifier)
    - don't like the results; undo
    - mesh explodes
    - weep; reload autosave from 5 minutes ago (that's what i set my autosaves to ;-) )

    - approach same sort of problem somewhere down the road
    - hmmm-640x472.png
    - ????
    - PROFIT!



    uh, there was a point to this originally. more coffee.
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