To days of stomach pains is over.
I decided to make a copy of my, now not working, app.
After more tries than I can think of, I did the following:
backup of localization folders in the project
Removed localization from the main storybord
removed all localization files from supporting files
removed localization folders from the project
Re-added localization to main storyboard.
Checked the three languages I need.
Moved the localization files back to the project folder.
Clean build folder
Remove app from iOS simulator
Run the app.
It works again.
It still does not make any sense to my, as to how added one more localization can mess everything up so much.
Well, that and I will never rely on snapshots again. Until I get time capsule, manual backup is the way to go. I was a fool not to add version control from the beginning. Lessons learned.
cheers.