Even though the executable is supposed to be self-contained, sometimes the packager (PyInstaller, etc.) failed to include a specific dynamic link library (DLL) or data file (like a .json , .xml , or .dll ). When the script tries to import or open that missing resource, it crashes.
Instead of the window closing immediately, the Command Prompt will stay open and show the specific Python traceback error (e.g., ModuleNotFoundError FileNotFoundError ), which can tell you exactly what is missing. If you can provide the exact name of the software failed to execute script mspm-source
Encountering the error message can be frustrating, especially when you’re in the middle of deploying a critical application or running a scheduled task. This error typically appears on Windows systems when running an executable ( .exe ) file that was created using PyInstaller or a similar Python-to-executable tool. Even though the executable is supposed to be