IPR in 14 often in endless prepare loop

Corona Corona for Cinema 4D Issues
1

Hi
does somebody also has this issue:

here often in many scenes but not always the IPR stays in prepare mode, it starts over abnd over again and never comes to first pixel. (real final render works fine, the same scenes worked fine in older versions)

i never had this in older corona versions

2

It’s most likely related to XPresso. We are aware of it and hopefully there will be a fix soon.
One workaround is to disable expression execution in scene settings: https://forum.corona-renderer.com/ IR and Xpresso issue #msg237151

Other threads:
https://forum.corona-renderer.com/ IR stuck in Parding and Geometry
https://forum.corona-renderer.com/ Interactive Rendering Bug in Corona 14 Update 1 (C4D 2025)

3

i do not use xpresso in any of this scenes, so not sure

EDIT: it did help turning it of in scene settings, maybe some plugin or any in the scene did use xpresso soemhow. so the workwround helps in scenes where this isnt needed., thx