FAQ: How to fix "Unknown BIB Error" in After Effects

Adobe Employee ,
Sep 12, 2022 Sep 12, 2022

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When do I get the "Unknown BIB Error" error in After Effects?

A bad font or corrupted font cache could cause this error to appear in the following situations:

  • While previewing.
  • When opening a project.
  • In some cases, you might see this error at launch.

unknown bib error.png

Solution:

Our community recommends the following solutions:

Remove newly installed and duplicate fonts. Instructions are below - 

Clear the font cache. Instructions are below -

Clear After Effects preferences -  https://adobe.ly/3t5x7Hd 

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Community Beginner ,
Sep 28, 2022 Sep 28, 2022

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I found out it could also happen if Ae is having trouble reading Ai files so reloading all imported Illustrator files fixed it for me 😄

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New Here ,
Sep 29, 2022 Sep 29, 2022

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This is what fixed it for me too, thanks!

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