Views:

Symptom

A script started over COM has crashed with an error message:
"Could not start the script component".

Cause

  • Make sure the for your Vissim version required Python version is installed in C:\PythonXX or C:\Program Files\PythonXX\ matching the architecture (32/64 bit) of PTV Vissim.
  • Make sure this path is added to the Windows "Environment Variables".
  • Make sure to install PyWin in the architecture (32/64 bit) matching the architecture of Python.

Resolution

  • Install the PTV Vision Python Setup from:
    • https://cgi.ptvgroup.com/php/vision-setups/
  • Register PTV Vissim as COM server (try with administrator credentials): Help > Register COM Server
  • Install the current service pack.
  • Reference: ch. 2: "Executing Scripts from within Vissim" in:
    • C:\Program Files\PTV Vision\PTV Vissim 10\Doc\Eng\Vissim 10 - COM Intro.pdf

 

Note:

Since version 2023 Vissim also installs Python 3.9 as an embedded package below the Vissim \Exe directory. This ensures that a compatible Python version is used by Vissim scripts and reduces interference with system wide Python installations. For version 2023 and newer it is not required to manually install Python.
 

Keywords: COM/Python: "Could not start the script component"