It indicates that After Effects cannot write data to a specific file or folder due to permission, path, or drive issues.
One of the most common causes of this error involves . Certain file formats (like H.264 .mp4) do not support Alpha channels (transparency). However, if your composition settings are set to "RGB + Alpha" and you try to export to a format that doesn't support it, the output module may crash during the write phase, spitting out the 48::72 error. after effects error 48 72
Deleting the Media Cache and Database folders to remove any corrupted temporary data. It indicates that After Effects cannot write data
: Rename the MediaCore folder to MediaCore-old or temporarily move the AEXD folder to your desktop to see if After Effects launches without the error. 2. Reinstall Problematic Plugins However, if your composition settings are set to
Therefore, Error 48::72 essentially translates to:
| Step | Action | |------|--------| | 1 | – Ensure the target drive has at least 10–20% free space. | | 2 | Run After Effects as administrator (Windows) or adjust folder permissions (macOS). | | 3 | Clear disk cache – Edit > Purge > All Memory & Disk Cache. | | 4 | Change output location – Use a local drive (not network/cloud-synced folder). | | 5 | Shorten file/folder names – Avoid special characters and long paths. | | 6 | Disable antivirus temporarily – Test if it’s blocking write access. | | 7 | Reformat drive (if using FAT32) – Use NTFS, exFAT, or APFS. |