Mesh file not defined ERROR

SPIS
1

I had some crashing issues when 3D meshing my spacecraft model in the GMSH 4.8.4 native to SPIS 6.2.6. I used the updated gmsh (4.15.1) to 3D mesh and it worked, however, when I try to upload the mesh file to SPIS, I get this error:

2026-03-05 09:21:24,054 ERROR o.k.m.g.c.LoadMeshFileCommand [AbstractCommand.java:323] The mesh file is not correctly defined :
com.artenum.penelope.mesh.io.FileFormatException: version 4.1 is not handled (2.XXX expected)
java.lang.UnsupportedOperationException: The mesh file is not correctly defined :
com.artenum.penelope.mesh.io.FileFormatException: version 4.1 is not handled (2.XXX expected)
at org.keridwen.modelling.gmsh.command.LoadMeshFileCommand.run(LoadMeshFileCommand.java:88)
at org.keridwen.modelling.gmsh.command.LoadMeshFileCommand.run(LoadMeshFileCommand.java:36)
at org.keridwen.core.messaging.AbstractCommand.execute(AbstractCommand.java:300)
at org.keridwen.core.messaging.DefaultBundleController$CallableCommand.call(DefaultBundleController.java:255)
at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:131)
at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:74)
at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:82)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

It seems that SPIS wont register files from the newer gmsh software. Any suggestions or workarounds?

2

Indeed, currently SPIS cannot read latest version of Gmsh mesh files.

But you can easily export to the correct file format using the latest versions of Gmsh:

  • When your file is meshed, go to File > Export.
  • Before clicking on okay, select the correct format on the top to "Mesh - Gmsh MSH (*.msh).
  • After that, another dialog will appear to select the correct format, here instead of the “Version 4 ASCII”, you need to select “Version 2 ASCII”

Like this, you will be able to load the exported mesh with SPIS.