Simcenter STAR-CCM+ Help me! "Can't load HOOPS Exchange library" or "couldn't load PLMXmlIo / CADModeler" errors during geometry import.

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In this article you will be guided what to do when receiving errors indicating problems with loading libraries or modules during importing geometry into Simcenter STAR-CCM+.


1. "Can't load HOOPS Exchange library" error.

It was recognized that this error is appearing on the Windows 10 64-bit OS due to a missing specific .dll library file in the system directory. When receiving this error you can check if you are able to find the following file: VCOMP140.DLL in the following location: C:\Windows\System32. If not, you have the bad luck working with the affected OS. Don't worry, it is not difficult to fix it, see the instructions from the following link

2. "Couldn't load PLMXmlIo" and/or "couldn't load CadModeler" module errors.
It was recognized that a third-party software bug is responsible for those issues with Simcenter STAR-CCM+. 
If you are able to find SXWMON.DLL file in the following locations:

  • c:\windows\system32\SXWMON64.DLL for Windows 10 - 64 bit or
  • c:\Windows\SysWow64\sxwmon32.dll for Windows 10 - 32 bit

then you are affected by this bug. To recover Simcenter STAR-CCM+ functionalities change the name of this file to e.g., SXWMON64_old.DLL but be prepared that this could cause issues with third-party software dropping this file during installation. A Google search can help you understand what is the source of this file, e.g.

As a workaround or temporary solution, during the startup of a Simcenter STAR-CCM+ session, you can try to add the following flags responsible for loading modules indicated by error message e.g.:
  • -module CadMoldeler
  • -module PLMXmlIo
  • -module StarMeshing
  • -module MeshingSurfaceRepair

For debugging issues like this, a tool called Dependency Walker or Microsoft Process Monitor could be helpful. Please take a look at the related KB article with an example of the debugging procedure.

KB Article ID# KB000049836_EN_US



Associated Components

Design Manager Electronics Cooling In-Cylinder (STAR-ICE) Job Manager Simcenter STAR-CCM+