VCARDs generated by ez-vcard 0.1.1 cannot be opened by some applications 
(tested with Kontact 4.4.8).

When I change the first line, removing the whitespace, "BEGIN: vcard" to 
"BEGIN:vcard", it works.

Snippit of the RFC2426 VCARD grammar:
########## BEGIN ############
   vcard        = [group "."] "BEGIN" ":" "VCARD" 1*CRLF
                  1*(contentline)
        ;A vCard object MUST include the VERSION, FN and N types.
                  [group "."] "END" ":" "VCARD" 1*CRLF
########### END #############

No space is allowed between ":" and "VCARD".
I'm not sure if lowercase "vcard" is allowed either.