> I see. It looks like Itasca 5 was last updated in mid-2019. I assume they have their reasons for both embedding FiPy and not updating it in a recently-supported version. If they're running a Python interpreter, it should be possible for you to manually update FiPy, but you'd need to ask the Itasca developers how to do that.

[chenyong97-cloud]

          > I see. It looks like Itasca 5 was last updated in mid-2019. I assume they have their reasons for both embedding FiPy and not updating it in a recently-supported version. If they're running a Python interpreter, it should be possible for you to manually update FiPy, but you'd need to ask the Itasca developers how to do that.

I tried Mr. Furtney solution way, that pass this error and I'm now facing with new error which, I think, is related to my windows variables ... .

OK, what is the new error?

Dear Dr.Guyer:
Now I am also troubled by the same problem. I wonder if you can help me find a solution.
Gmsh3D.zip

When I input the code(with Mr. Furtney solution way) in the attachment in PFC6.0 (the software has built-in version 3.6.1 of Ipython), the following error message appears:

IndexError Traceback (most recent call last)
C:\Program Files\Itasca\PFC600\exe64\python36\lib\site-packages\fipy\meshes\gmshMesh.py in read(self)
793 ghostsData,
--> 794 facesData) = self._parseElementFile()
795

C:\Program Files\Itasca\PFC600\exe64\python36\lib\site-packages\fipy\meshes\gmshMesh.py in _parseElementFile(self)
1123 geometricalEntity) = _parseTags(offset=faceOffset,
-> 1124 currLineInts=currLineInts)
1125 currLineInts[0] -= faceOffset

C:\Program Files\Itasca\PFC600\exe64\python36\lib\site-packages\fipy\meshes\gmshMesh.py in _parseTags(offset, currLineInts)
1052
-> 1053 numTags = currLineInts[2]
1054 tags = currLineInts[3:(3+numTags)]

IndexError: list index out of range

During handling of the above exception, another exception occurred:

PermissionError Traceback (most recent call last)
in ()
41 Surface Loop(33) = {27, 28, 29, 30, 31, 32};
42 Volume(34) = {33};
---> 43 ''' % locals())
44

C:\Program Files\Itasca\PFC600\exe64\python36\lib\site-packages\fipy\meshes\gmshMesh.py in init(self, arg, communicator, order, background)
1942 self.cellGlobalIDs,
1943 self.gCellGlobalIDs,
-> 1944 self._orderedCellVertexIDs_data) = self.mshFile.read()
1945
1946 self.mshFile.close()

C:\Program Files\Itasca\PFC600\exe64\python36\lib\site-packages\fipy\meshes\gmshMesh.py in read(self)
851 finally:
852 os.unlink(self.nodesPath)
--> 853 os.unlink(self.elemsPath)
854 if self.namesPath is not None:
855 os.unlink(self.namesPath)

PermissionError: [WinError 32] Another program is using this file, and the process cannot access it : 'C:\Users\chenyong\AppData\Local\Temp\tmpvgib8l76Elements'
Gmsh3D.zip
Gmsh3D.zip

Originally posted by @chenyong97-cloud in #784 (comment)

[guyer]

Itasca is not our software and, as you quoted, they apparently embed a four year old version of FiPy. Current FiPy does not raise an error on this mesh.

Please contact Itasca for support.

[chenyong97-cloud]

Itasca is not our software and, as you quoted, they apparently embed a four year old version of FiPy. Current FiPy does not raise an error on this mesh.

Please contact Itasca for support.

Thank you very much, Dr.Guyer.
Best wishes!