[arch-general] what is this supposed to mean ?

Hello, Trying to do a complete system update, I get: error: failed to commit transaction (conflicting files) cups: /etc/cups/printers.conf exists in filesystem Errors occurred, no packages were upgraded. Certainly that file does exist, it probably has to in order to make my printer work. But why - is this an 'error' - does it block the update ??? And - What do I have to do to enable the system update ? And maybe pacman could be a bit more informative in such cases ? Ciao, -- FA O tu, che porte, correndo si ? E guerra e morte !