Hi, Ben
I am using Python 3.11 and I have attached the error message I get. I can import other modules with no problem, except vtkIOOCCT. I have rebuilt everything from scratch in the light of Davids advice, however I now have realized that I have not copied any of the OCCT .dlls this time into the bin directory of VTK. Below is the what I see upon checking dependencies of vtkIOOCCT.dll.
PS: I copied all dlls of OCCT-install to the bin of VTK and it worked!!
Here is the dependencies now, and I can successfully import vtkOCCTReader. Thanks yall for your suppor this has been very helpful!!!