Error message for clips with opacity effect

[Julie290981643wz5]

I have used 3 PNG files in my project and changed the opacity of each, now the clips can neither be rendered nor exported. I get the following error messages. Does anyone know this?

[Julie290981643wz5]

[Ann Bens]

Try changing the preview codec to Quicktime prores lt.

[Kevin-Monahan]

Hi Julie,

If Ann's advice does not work, please give the team more information. See, How do I write a bug report?

I hope we can help you.

Thanks,
Kevin