Hi all,
Thank you again for your patience. The fix for aerender with OCIO was released this week with After Effects 2025 (version 25.0.0.53). It is not yet listed in the Fixed Issues, but will be added soon.
See https://helpx.adobe.com/after-effects/kb/fixed-issues.html for other fixed issues in After Effects 2025.
Thanks again for reporting this issue,
- John, After Effects Engineering Team