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

[nishu_kush]

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.

Solution:

Our community recommends the following solutions:

• Reload Illustrator files - Right-click the Illustrator files in the Project panel and select Reload Footage

• Remove newly installed and duplicate fonts. Instructions are below - 

• Windows: https://bit.ly/3Uf9fwK 
• macOS: https://apple.co/3BzjqF3

• Clear the font cache. Instructions are below -

• Windows: https://bit.ly/3B7u841 
• macOS: Restart your Mac in Safe mode to automatically remove font cache: https://bit.ly/3La85yh

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

[realistic_Mercury5C46]

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 😄

[finleyg21076769]

This is what fixed it for me too, thanks!

[haithama42027047]

how i can reload all the ai files? do I do it individually? 

[realistic_Mercury5C46]

No need, you can just type ".ai" on the search bar on the project window and it will show all illustrator files then all you need to do is select all of them with ctrl+a (cmd+a on mac), right click and click on "reload footage"

obs: some of it may still render as a missing file if that happens you will need to select it and click on replace footage>file, select the original file import it,  make sure to select "choose layer" in the layer options and select the layer yo'll be replacing

[Shahin5D2E]

Hey Gabriel.. This helped.. Thanks..

[natikomr]

Thank you! It helped me too

[nishu_kush]

Thanks for sharing the incredible solution, @realistic_Mercury5C46.

I'll add it to the FAQ.

Best,

Nishu

[frostbait46]

Thank you so much!! 

[Sophia234759052ywr]

Thanks !!! It fix it by reload .ai !

Merci ça a fonctionné en recharchant les fichier .ai !

[mousam5CEA]

worked for me too thanks

[yara376316824e0a]

you're a life saver istg

[qashmalrasyid]

finally thank you for helpful instruction it works for me

[John L. Kim]

This fixed it for me.

[Noah2609271736sw]

you're a hero, Gabriel!

[Jopalomino97]

Y cómo se supone que se hace eso?

[HYPONEO]

You are my hero 🥰

[bhaveshp28533793]

excellent and time-saving trick....Kudos broo!!!!!

[Birju28240338orvw]

thank you it's working now

[Alexandre28732434kcqx]

Muito obrigado, Gabriel! Salvou a minha vida!!!!

[해성29234774sn5c]

Thanks

[Yashvant299363722lc1]

off caps loack....

[NILIMESH]

Thank you much bro, 

[vaibhav26058362dcls]

After effects warning: unknown BIB Error Source sream Error, CT, 0 (83::3)

not able to fix this issue by adobe team

[Zuheyr29133902n5du]

solution worked for me ./...