Hi there, Sorry to hear that you're not able to export animations out of Photoshop after the recent update. Could you please let us know which operating system you're working on? Also, would you mind sharing your complete workflow so that we can try it at our end?
Have you tried reinstalling Photoshop and see if it helps? You may try resetting the preferences of Photoshop and see how it goes: https://helpx.adobe.com/photoshop/using/preferences.html
Note: Make sure that you back up all your custom presets, brushes & actions before restoring Photoshop's preferences. Migrate presets, actions, and settings
Regards, Sahil
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