I am dropping a 2.5K clip in to a 4K 16.9 ratio project. On the upper layer I'm placing a PSD file with an alpha channel that acts as a film mask. The AE video project is 32bit with an RGB colour space. The PSD file is 16bit made in RGB. The option I choose when importing the PSD file is "Merge Layer Styles into Footage".
When rendering this or similar projects using a combination of PSD and Mov files, I invariably receive the following dialogue once rendering has completed. "After Effects Error: couldn't perform post-process action because the item to replace is missing". Now, I cannot see what item is missing as the clip renders normally. Can anyone tell me why I am receiving this message and how to get rid of it?
I'm working on a MacPro 2024 Silicon 4. Mac OS Sequoia 15.7. After Effects 25.5.
Thank you.