Can you try the CSGSolidEvaluator transformer and see what happens? I suspect - well, OK the error clearly indicates - something is not right with the geometry, and I think this transformer may help to show us what.
Also try the GeometryValidator transformer. It has a number of tests (like Solid Orientation and Solid Boundaries) that you can use to validate the geometry
Otherwise I can only suggest sending the data to our support team (via support.safe.com) and asking them to take a look at it. We'd probably be able to figure out why this problem occurs if we had the data itself.
Thank you, Mark!
Geometry Validator showed me that there is a problem with geometry of one of the layers:

Fragment is getting lost while running the python script from this fantastic workflow by @sander
My competence is not enough to understand why this is happening. Maybe there is a way to fix broken solid or to understand why this happens? Or maybe problem is with input tif file? Workflow and 2input geotiffs are attached.
02_t_QIV.tif
19_pr_QIII.tif
3dgeology.fmw
Hi @unsquirrel,
Not sure what causes this issue, but my first guess is that it's due to rounding. Are you maybe reprojecting the solid afterwards, perhaps?
I will have a look at it, but since I've just become a father (again), it might take a while... Ping me if you haven't heard back from me in 2 weeks or so.
Sander
Hi @unsquirrel,
Not sure what causes this issue, but my first guess is that it's due to rounding. Are you maybe reprojecting the solid afterwards, perhaps?
I will have a look at it, but since I've just become a father (again), it might take a while... Ping me if you haven't heard back from me in 2 weeks or so.
Sander
Thank you, @sander and, please, accept my congratulations!
And no, I am not reprojecting solid, fragment is missing exactly after running a python script.