ROS Melodic no longer finding python scripts

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NOTE: Working in Windows (I have to because this is the machine that my work requires me to use).

I’m creating a project which will communicate with another companies ROS project. Originally, I was building it in Noetic (which was also on this same windows machine) but I was told they are using Melodic so I have to revert back to Melodic on mine. When I was running my packages in Noetic it ran fine … I used the following command:

rosrun gui_pkg main.py

However, when I changed over to Melodic for some reason it no longer can find the main.py so in order to run it, I need to run the following command:

rosrun gui_pkg scripts/main.py

That’s not a big deal but I am now running into errors finding other custom libraries. For example, the following import no longer works:

from gui_templates.tx_rx_display import TxRxDisplay

Any ideas of why this is now an issue? Btw, I also have the very simple talker.py/listener.py package from the ROS website that worked completely fine in Noetic but requires the "scripts/talker.py" in the rosrun command in order to run as well.

Some relevant info:

OS: Windows 10

folder layout under gui_pkg folder

• setup.py
• CMakeLists.txt
• package.xml
• scripts
  • main.py
  • gui_templates
    • tx_rx_display.py

CONTENTS of setup.py:

 from distutils.core import setup
 from catkin_pkg.python_setup import generate_distutils_setup

 d = generate_distutils_setup(
     packages=[‘gui_templates’],
     package_dir={‘’: ‘scripts’}
 )
 setup(**d)