[SOLVED]0.19pre, DAE export mesher Mefisto halt FreeCAD

[fc_tofu]

Version: FreeCAD_0.19.19697_x64_Conda_Py3QT5-WinVS2015
OS: Win10 x64

Reproduce:
- Preferences >Import-Export >DAE >Export options >Mesher=Mefisto
- Menu >File>Export >Collada (.dae)
- FreeCAD halt, export fail
ps.
other 2 options, Builtin/Netgen work well.

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[Syres]

Not sure whether the specific mesher is a factor but nevertheless you need to create a folder called resources under src\\bin\Lib\site-packages\collada and add the two files as per https://github.com/pycollada/pycollada/ ... /resources

This bug started since the folder lxml was added under src\bin\Lib\site-packages I initially just renamed this folder to lxml_old to prove that the ImportDAE.py was being affected by it's existence and then put it back when confirmed. I assume it's used by something else and it wasn't noted that collada would look it up and cross reference the missing resource files.

Could the resources folder and two xml files please be added to the packaging of collada somehow?

[fc_tofu]

Not sure whether the specific mesher is a factor but nevertheless you need to create a folder called resources under src\\bin\Lib\site-packages\collada and add the two files as per https://github.com/pycollada/pycollada/ ... /resources

This bug started since the folder lxml was added under src\bin\Lib\site-packages I initially just renamed this folder to lxml_old to prove that the ImportDAE.py was being affected by it's existence and then put it back when confirmed. I assume it's used by something else and it wasn't noted that collada would look it up and cross reference the missing resource files.

Could the resources folder and two xml files please be added to the packaging of collada somehow?

Thank you, your workaround worked on my machine.

To supplement my first post,
1. only "Mefisto" option causes fail, but other 2 options "Builtin/Netgen" work well.
2. after successful export mefisto dae, I deleted the 2 .xml files, delete all "__pycache__" dirs, clear FreeCAD roaming dir, and restart computer. Try export mefisto dae again, this time export also worked well.

From now, it seems not a bug. Quite strange. If somebody have insterest, give this a test.