This is a bug that I've noticed when you use 'get_relative_process' to run a script from another process. If the original (source) process errors, the error indicator will still show up as green, not red. Essentially this is a false positive, and can be misleading.
Here's an example of code that uses 'get_relative_process.'
from vtool.maya_lib import util
def main():
script_name = 'create_test_rig'
rel_process = process.get_relative_process('../../chr_default_biped/body')
code_file_path = rel_process.get_code_file(script_name)
rel_process.run_script(code_file_path)