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cura 4.2.1 problem

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Posted (edited) · cura 4.2.1 problem

Hi folks,


for mee too.

Windows 10 pro / Cura 4.2.1 / splash screen is coming up and i can see the that the plugins will loading.

Then crash cura.exe without any error message.

Also with caompatibility modes, win8, win 7...

In the logfile i can see the last entry is "checking firmware update".

It is possible to deaktive this point?


Best regards,


Edited by christofmichel

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Posted · cura 4.2.1 problem


I'm having exactly the same symptom.

To be fair it all started with a Windows update (Swedish) while still on Cura 4.1.0.

The Windows update was functional update for Windows 10, version 1903 together with .NET framework update: July 9, 2019-KB4506991 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 1903.


After the Windows update stl file association was "restored" to Microsoft tools. I have no idea if the updates are related to our problems in anyway, but woth mentioning.





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Posted · cura 4.2.1 problem



With me Cura 4.2.1 is hanging too, but i found a work arround.



After Cura 4.2.1 startup, i see it is loading plugins, but then at "Loading preferences" it's stucked.


Work arround:

Start a 2nd instantiation of Cura 4.2.1, this one does not stuck at loading preferences.



I'm running on Windows 10 Pro.

My custimizations after installation: Select printer Creatlity CR10S-Pro, add two filaments profiles and make thickness changes in the 0.2mm profile.


Before installation, I completely removed all previous Cura versions and all profiles to make 100% sure that old profiles are not causing this issues. This is my third and most thorough installation of Cura 4.2.1, i have no other options left that using the work arround of starting a 2nd instantiation. Hopefully the developers can reproduce this and use this work arround as a hint.


Best regards,



loading preferences forever.png

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