After changing the file name of a python script in file explorer, which is referenced as a script in a Toolbox, all script tools in the toolbox will lose their name when displayed in Catalog View.
Version: 3.0.0
Creating a new script will result in the error below:
Typical context menu for dead script tools is missing:
I changed the python script file in windows explorer by opening the right click context menu and choosing Rename. double clicking the file name. The script was an externally referenced file (not embedded).