Fatal Error: Access level to class must be protected

[guillermobytes]

im getting an error that i don't understand :

Fatal error: Access level to Dumper_Regex_Url::_update() must be protected (as in class Dumper_Regex_Abstract) or weaker in /var/share/php/DumperFramework/DumperFramework-0.5.5/library/Dumper/Regex/Url.php on line 2

so i have the Dumper_Regex_Ur l which extends Dumper_Regex_Ab stract and implements the abstract method _update()
in the Abstract class that method is abstract and protected.
In the subclass (the one that triggers the error) it is protected too.
I have even put it public but it changes nothing.

Any hint?

[guillermobytes]

I'm sorry, i have edited my scripts for updating the library recently and there was a typo so it wasn't updating correctly.