Concept Laser BP 1.2 issue

An issue may occur in a very specific situation with the Concept Laser Build Processor 1.2, released in June of this year.

Description & Impact

In certain geometries, the absence of support in some zones is misinterpreted by the machine controller software and may consequently cause an unwanted stop of the machine and build.



It is possible to confirm whether a specific job file will crash before building by scrolling through the slice stack in the Concept Laser Machine Control Software (CL WRX).


The following error will confirm that the job file will cause issues upon building:


Upon Detection

Contact our support team via the webpage for instructions on how to avoid the crash.



We sincerely apologize for this situation and our engineering department is currently preparing an upgrade to solve this issue. It should be released in the coming weeks.

Hereunder a video with an additional explanation.


Our team has fixed the bug, and the updated version, Concept Laser Build Processor 1.2.7, is now available for download.

Download updated Concept Laser Build Processor ›

If you have a maintenance license, please enter your license key and download the updated version as usual.

We sincerely apologize for any issues this bug may have caused.

With kind regards,
Materialise Software Team

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