The error message, "Error 002777 The name is invalid" is returned when saving a locator with a period between the pathname in the Create Locator tool.

Workaround

1. Create the locator and store it in a folder name without a period, for example, D:\EsriTesting\new_locator.
2. Move the locator to the respective folder, for example, Esri.Testing.

Steps to Reproduce