Ultimaker Cura crashes when opening any file

Ultimaker Cura might crash when opening a file, when another application called 'Chitubox' is installed. This has started occurring since Ultimaker Cura 4.9, as there is an incompatibility caused by the two programs.

There are two options to prevent Ultimaker Cura from crashing:

  1. Uninstall Chitubox completely and continue using Ultimaker Cura
  2. Uninstall the Chitubox thumbnail preview, by following these steps:
    1. Open cmd with administrator rights
    2. Enter the command: regsvr32 /u "C:\Program Files\<Chitubox version>\CHITUBOX_Thumbnail.dll"
    3. Restart your computer

Note: Because Chitubox install location can very by version number, you will need to identify the correct install location on your system.  Replace <Chitubox version> with the location on your system.
Example: regsvr32 /u "C:\Program Files\CHITUBOX64 1.0.0\CHITUBOX_Thumbnail.dll"

If this does not resolve your issue, please submit a request to get support from the Ultimaker Cura team.

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  • I removed Chitubox and Cura 4.10 worked properly. For some reason immediately after upgrading I was able to open a few stl files successfully and then it started shutting down whenever I attempted to open any file from either the open icon or the file/open drop down menu

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  • Hi Suzanne,

    Please submit a support request as the article mentions. Include your Cura log files, as we need them to investigate this issue further.

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