lightmix backburner

good day
I want to save a corona exr and render via backburner. If i adjust tif renders buckburner without problems. If I set corona exr, I get the error message:
Error Creating file output: * _envorioment.cex?
The paths I can not delete, otherwise saves buckburner also the cexr not,

Thank you very much.
funk24

When I write all render elements from * .cex to * .tif it worked.

Looks like duplicate of Error Creating File Output - Corona for 3ds Max :: Issues - Chaos Forum