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    Datasmith Export Problem

    Hi everyone,

    I've got a problem with exporting out of 3dsmax with the datasmith exporter and importing into unreal studio. The meshes export without an problem the first time I open my 3dsmax scene and exporting out of it. But if I export a second time (even with no changes to the scene and meshes) all the meshes are distorted when importing to unreal. The error occurs with overwriting the udatasmith file and with creating a new one. When I save the 3dsmax file and reopen and export again, everything exports right again. But still, just the first time.

    Does anyone know how to fix this error?

    Best Greetings!
    Last edited by Link-3D; 01-18-2019, 05:44 AM.

    #2
    Hi Link-3D ,

    I'm unable to reproduce your problem but may i suggest that you try using the re-import instead of importing twice?
    To do so , Find your Datasmith scene, right click --> select re-import
    Let me know if that fixes the problem ?

    Cheers
    Marie-Claude Jutras
    Product Specialist LinkedIn
    Unreal Studio
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      #3
      Hi,
      thank you for the reply. Reimport was the first thing I tried, but I get the same result. It must have to do something with the max export into a udatasmith file. If I export the same object in fbx it works all the time. Just with the udatasmith extension only the first time after opening max. I'm using Max 2019.
      Is there a way to share with you an example max file which produces the error? Maybe I used a modifier or similar which is not compatible with datasmith, even if the object is at the moment just a collapsed editpoly.

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        #4
        Originally posted by Link-3D View Post
        Hi,
        thank you for the reply. Reimport was the first thing I tried, but I get the same result. It must have to do something with the max export into a udatasmith file. If I export the same object in fbx it works all the time. Just with the udatasmith extension only the first time after opening max. I'm using Max 2019.
        Is there a way to share with you an example max file which produces the error? Maybe I used a modifier or similar which is not compatible with datasmith, even if the object is at the moment just a collapsed editpoly.
        I don't know if it helps. But the distorted mesh issue is likely because of the invalid transformation of the meshes. Try to force Reset X-Form on the meshes and try to reimport it separately Just to check. If look at the scale setting or rotation you can see that there will be some negative values in there.
        .The issue with these meshes is that u can't correct it in even Ue4 itself , the more u try the more weird the transformations get. So try to reset them in Max only. Hope this Helps!!

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          #5
          Originally posted by Link-3D View Post
          Hi,
          Is there a way to share with you an example max file which produces the error? Maybe I used a modifier or similar which is not compatible with datasmith, even if the object is at the moment just a collapsed editpoly.
          The best would be to log a support ticket with the 3ds max archived so we can inspect it and a video captured from your screen showing what you have done (OBS is a great video capture tool). https://unrealstudiohelp.epicgames.c...community-page
          Last edited by Stephen Ellis; 01-25-2019, 11:01 AM.
          Pierre-Felix Breton

          Sr Technical Product Manager AEC, Unreal Engine Enterprise
          Epic Games - LinkedIn


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