Error: Requested variants "" do not match those the build was started with: "+universal".

[dbl001 (dbl)]

--->  Computing dependencies for tk
--->  Dependencies to be installed: pkgconfig libiconv
Error: Requested variants "" do not match those the build was started with: "+universal".
Error: Please use the same variants again, or run 'port clean libiconv' first to remove the existing partially completed build.

can't create directory "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_databases_unixODBC": permission denied
    while executing
"file mkdir $workpath/.home"
    (procedure "open_statefile" line 7)
    invoked from within
"open_statefile"
    (procedure "check_variants" line 28)
    invoked from within
"check_variants activate"
    invoked from within
"$workername eval "check_variants $target""
    (procedure "mportexec" line 7)
    invoked from within
"mportexec $workername $install_target"
Unable to execute target 'install' for port 'unixODBC': can't create directory "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_databases_unixODBC": permission denied
    while executing
"install_ports $operationList"
    (file "./restore_ports.tcl" line 287)

[mf2k (Frank Schima)]

You need to follow the instructions in the output you supplied. Namely:

Please use the same variants again, or run 'port clean libiconv' first to remove the existing partially completed build.