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Alembic - Broken Shadows / Materials / Smoothing (4.13.0)

When closing a file that had an Alembic file (vertex animation cache) that was mostly working, playing, and casting shadows - it seems to act up after opening up the project file again.

  • It no longer seems to cast shadows

  • No longer can edit the materials (which were already pretty broken)

  • Smoothing groups seem to break


Not sure how to correct this, but seems consistent with Alembic vertex animation files. Works, then on second run, most of it's broken.

Product Version: UE 4.13
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asked Sep 04 '16 at 10:02 PM in Using UE4

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avatar image yanlec Sep 18 '16 at 05:22 PM

I have the same problem on 4.13 as well. The workaround I've found is to reimport the object

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