[Koha] another Koha 2.2.0RC4 question

[zero at vtr.net]

It's imposible to me add a member.  Is the "zipcode" field mandatory we
don't use it here in Chile (as I know), Do i have to set something in the
parameters before adding new members? I only get the error page but no error
cause displayed.  

Another thing... why with the Spanish translation the pages seems different?
only text displayed in the pages and no background color.

Ok hope someone could help with the first issue it is more important to
me...

Thanks

Cheers


J0sep