file_png_save2 gives Permission Denied error, but can save through File menu

[Ofnuts]

Nothing obvious, so:

• Check the system security log, perhaps the python interpreter is blacklisted and it (or its children) are not allowed to write to disk.
  
• If you catch the exception and print the exception message, you could have more info (see here for some hints)
  
• The OneDrive directory could have a special status, and this isn't difficult to check by writing elsewhere.
  
• I assume that MyId is replaced by the adequate username
  
• Your first name parameter has no extension, so I wonder what the real name is and what it does
  

Also:

• You can avoid the double \\ by using r-strings: r"C:\Users\MyID\OneDrive\Pictures\ScriptTest\", but forward slashes also work on Windows: "C:/Users/MyID/OneDrive/Pictures/ScriptTest/"
  
• The os.path module has a join method to create correct paths from directories and file names.