I Reinstalled and republished CB Quickstart and I got the same results.
"Looks like you installed CB Quickstart then promptly uninstalled it or unpublished it. CB Quickstart makes sure all of its default language strings get loaded in. Re-install CB Quickstart if you uninstalled it otherwise if it's unpublished be sure to republish it."
I did something else and I got mixed results:
I went back to "System - Language Filter" and change it from "Browser Settings" to "Site Language" , when I login back sometimes works and other times not.
I am using CB Google Translate as well.
I am doing more testing. The Front End Language selector does not appear anymore. Can the CB Google Translate and the System - Language Filter be published at the same time?