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  • KB278772691: Hotfix 201903079 for Automation Engine 18.1
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Export Nested Layouts: The task could fail when exporting a layout containing placed normalized PDF files which were produced by the Prepare Graphics for Nesting task.


Error: "TRYING TO RELEASE CT WITH REFCOUNT : Internal CT" followed by "SYSTEM ERROR C0000005" when generating print file (cut file is generated correctly).

i-cut Layout (18.0) has no problems for the same input.

More Information

For installation instructions and to download the hotfix, go to



Article information
Applies to

 Automation Engine 18.1



Last revised 
Case Number CS01200128

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.