I had an idea, but it doesn't work.
and change it to: But that does not work: Freecad does not open any more files after the first one. Not sure why.

I installed the Asm3-Branch, but error message stays the same, but is now repeated twice for the same file. My STEP file is a sinlge, self-contained file, with no external or additional files. Traceback (most recent call last): File "<string>", line 1, in <module> <type 'exceptions.RuntimeError'>: A...

@easyw-fc: thank you for the tip with Cad Assistant; I did not know about this great CAD / STEP file Viewer.

The file imports nicely into Open Cascade Cad Assistant 1.2.1. This means that at least the file is not corrupt.

Dear all, I try to Import a STEP (.stp) file that was exported by a commercial software. Unfortunately, I can't share the file. The step file is of the plain-text type, (FILE_DESCRIPTION(('STEP AP214'),'1');) If I open the file in FreeCad 0.17 it will start reading the file, the status bar says "Rea...

Should I file a bug reports for this?

1. Part->Boolean->Cut should show error message if a non-solid (Shell, etc.) is selected. (at least in the console window)
   Bug report: issue #3694
2. Part->3D-Offset should warn if resulting object is not a solid (or add option to try to make it one)
   Bug Report: issue #3703

Your M4 Nut object is a solid encapsulated inside a compound. How do you know that? I can't see it anywhere in the object tree. To me, it just looks like a simple solid (Icon: blue box). I converted the shell that is generated by Part->"3D-Offset" to a solid by Part->"Convert to solid". Now the boo...

Dear chrisb, If I right-click the "Cut" item and then "Mark to recompute" nothing changes. There error icon is still there. Same behaviour when I select the document root and right-click "mark to recompute". How did you "recompute the whole document" ? Is this a menu item somewhere? If I hide all th...

Hello, does anyone know, why the boolean cut in the attached example fails? I want to make a cage for a simple M4 nut. I have the model for the M4 nut and want to subtract it from a simple solid block, but with a little clearance margin. So I used the Part->3D-Offset to make a little 0,5 mm offset (...

Thank you!
That was the right solution.

Ah, the reason, why it is not crashing any more, is a windows feature called "fault-tolerant heap". Once FreeCad crashes, it is stored permanently in the registry. For this bug to reproduce, you need to delete registry entry for FreeCad in the following keys (attention: it is "Windows NT" not plain ...