If you use Mac OS X >= 10.6, use gnu tar (/usr/bin/gnutar) to avoid PAX headers. It's also important to rename (shorten) long file names (>= 100 characters) in the distribution.
Error: PaxHeader/Dist-Zilla-Plugin-UploadToSFTP-0.003,PaxHeader/Dist-Zilla-Plugin-UploadToSFTP-0.003,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/INSTALL,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/INSTALL,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/LICENSE,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/LICENSE,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/Changes,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/Changes,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/MANIFEST,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/MANIFEST,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/perlcritic.rc,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/perlcritic.rc,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/t,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/t,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/xt,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/xt,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/README,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/README,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/META.yml,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/META.yml,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/lib,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/lib,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/Makefile.PL,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/Makefile.PL,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/weaver.ini,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/weaver.ini,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/META.json,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/META.json,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/dist.ini,Dist-Zilla-Plugin-UploadToSFTP-0.003/PaxHeader/dist.ini,Dist-Zilla-Plugin-UploadToSFTP-0.003/lib/PaxHeader/Dist,Dist-Zilla-Plugin-UploadToSFTP-0.003/lib/PaxHeader/Dist,Dist-Zilla-Plugin-UploadToSFTP-0.003/lib/Dist/PaxHeader/Zilla,Dist-Zilla-Plugin-UploadToSFTP-0.003/lib/Dist/PaxHeader/Zilla,Dist-Zilla-Plugin-UploadToSFTP-0.003/lib/Dist/Zilla/PaxHeader/Plugin,Dist-Zilla-Plugin-UploadToSFTP-0.003/lib/Dist/Zilla/PaxHeader/Plugin,Dist-Zilla-Plugin-UploadToSFTP-0.003/lib/Dist/Zilla/Plugin/PaxHeader/UploadToSFTP.pm,Dist-Zilla-Plugin-UploadToSFTP-0.003/lib/Dist/Zilla/Plugin/PaxHeader/UploadToSFTP.pm,Dist-Zilla-Plugin-UploadToSFTP-0.003/xt/PaxHeader/author,Dist-Zilla-Plugin-UploadToSFTP-0.003/xt/PaxHeader/author,Dist-Zilla-Plugin-UploadToSFTP-0.003/xt/author/PaxHeader/perltidy.rc,Dist-Zilla-Plugin-UploadToSFTP-0.003/xt/author/PaxHeader/perltidy.rc,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/000-report-versions.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/000-report-versions.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-test-version.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-test-version.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-dist-manifest.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-dist-manifest.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-cpan-changes.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-cpan-changes.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-kwalitee.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-kwalitee.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-critic.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-critic.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-unused-vars.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-unused-vars.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-mojibake.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-mojibake.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-pod-coverage.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-pod-coverage.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-meta-json.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-meta-json.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/00-compile.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/00-compile.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-portability.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-portability.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-eol.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-eol.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-pod-syntax.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-pod-syntax.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-minimum-version.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-minimum-version.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-pod-linkcheck.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-pod-linkcheck.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-synopsis.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-synopsis.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-no-tabs.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/author-no-tabs.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-distmeta.t,Dist-Zilla-Plugin-UploadToSFTP-0.003/t/PaxHeader/release-distmeta.t