processing of port wget failed

[CoBra111]

MacBook-Pro-Brantner:~ brantner$ sudo port install wget

--->  Computing dependencies for wget
--->  Dependencies to be installed: gettext expat libiconv ncurses gnutls gmp libidn libtasn1 nettle p11-kit curl-ca-bundle desktop-file-utils popt libffi libxslt libxml2 xz zlib pcre bzip2 libedit
--->  Activating expat @2.2.0_0
Error: org.macports.activate for port expat returned: Image error: /opt/local/bin/xmlwf already exists and does not belong to a registered port.  Unable to activate port expat. Use 'port -f activate expat' to force the activation.
Error: Failed to install expat
Please see the log file for port expat for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_textproc_expat/expat/main.log
Error: The following dependencies were not installed: gettext expat libiconv ncurses gnutls gmp libidn libtasn1 nettle p11-kit curl-ca-bundle desktop-file-utils popt libffi libxslt libxml2 xz zlib pcre bzip2 libedit
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port wget failed

[raimue (Rainer Müller)]

Please remember WikiFormatting.

/opt/local/bin/xmlwf should be provided by expat. However, the file already exists on your system and this is unexpected. It might be a leftover from a previous install, did you migrate this MacPorts installation in any way? Did you restore files from a Time Machine backup?