The problem was occurring when loading the last opened project on
startup, and there were no (recent) projects in the projects.ini file,
causing the project list to not have any items in it. When it went to
save the project settings, it was getting the list index error,
This might have occurred from deleting the projects.ini file, or
removing projects, I'm not exactly sure yet.
The easiest way to fix it is to start the editor, and open a project
using the My Websites -> Open Website Project... menu, and select the
project file (*.cpf).
This will add the file to the recent projects list and everything
should work fine.
We have fixed the code to add the last opened project to the projects
list when starting up, as well as an index check when updating a