Esko Logo Back to Esko Support
Choose your language for a machine translation:


Optimize PDF Separations: Spot colors (associated with a Lab ICC profile) may change tone drastically when converted to CMYK.


In the task 'Optimize PDF Separations', when converting a PDF file's spot colors to CMYK, and having the setting "Spot Color Lookup" set to "Use Colors in File", then the task may not respect the tone of the spot colors that have a Lab ICC profile associated with them in the PDF file.

More Information

For installation instructions and to download the hotfix, go to

Article information
Applies to

Automation Engine 18.1 



Last revised
Case Number



What is a Hotfix?

A Hotfix is a software package that you can install on an existing installation of our software. Each hotfix contains fixes for one or more known issues in our released software.

Because there is always a small chance for a hotfix to cause new issues, you should only install Recommended Hotfixes, unless otherwise instructed by your Esko Software Support team.