If script can´t read storyboard, all strings files are erased

[Knodd]

I´ve found that sometimes the script can´t read the storyboard file (Always happens if project is open i xcode and sometimes when it´s not) it will detect that it has changed, but since it cannot read the file, it thinks that all strings should be deleted and left me with empty strings files for 6 languages.

Now I always do a backup before running the script but if this problem can be fixed It would great!