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/LWPx-UserAgent-Cached-0.011,PaxHeader/LWPx-UserAgent-Cached-0.011,LWPx-UserAgent-Cached-0.011/PaxHeader/INSTALL,LWPx-UserAgent-Cached-0.011/PaxHeader/INSTALL,LWPx-UserAgent-Cached-0.011/PaxHeader/LICENSE,LWPx-UserAgent-Cached-0.011/PaxHeader/LICENSE,LWPx-UserAgent-Cached-0.011/PaxHeader/Changes,LWPx-UserAgent-Cached-0.011/PaxHeader/Changes,LWPx-UserAgent-Cached-0.011/PaxHeader/MANIFEST,LWPx-UserAgent-Cached-0.011/PaxHeader/MANIFEST,LWPx-UserAgent-Cached-0.011/PaxHeader/t,LWPx-UserAgent-Cached-0.011/PaxHeader/t,LWPx-UserAgent-Cached-0.011/PaxHeader/xt,LWPx-UserAgent-Cached-0.011/PaxHeader/xt,LWPx-UserAgent-Cached-0.011/PaxHeader/README,LWPx-UserAgent-Cached-0.011/PaxHeader/README,LWPx-UserAgent-Cached-0.011/PaxHeader/META.yml,LWPx-UserAgent-Cached-0.011/PaxHeader/META.yml,LWPx-UserAgent-Cached-0.011/PaxHeader/lib,LWPx-UserAgent-Cached-0.011/PaxHeader/lib,LWPx-UserAgent-Cached-0.011/PaxHeader/Makefile.PL,LWPx-UserAgent-Cached-0.011/PaxHeader/Makefile.PL,LWPx-UserAgent-Cached-0.011/PaxHeader/weaver.ini,LWPx-UserAgent-Cached-0.011/PaxHeader/weaver.ini,LWPx-UserAgent-Cached-0.011/PaxHeader/META.json,LWPx-UserAgent-Cached-0.011/PaxHeader/META.json,LWPx-UserAgent-Cached-0.011/PaxHeader/dist.ini,LWPx-UserAgent-Cached-0.011/PaxHeader/dist.ini,LWPx-UserAgent-Cached-0.011/lib/PaxHeader/LWPx,LWPx-UserAgent-Cached-0.011/lib/PaxHeader/LWPx,LWPx-UserAgent-Cached-0.011/lib/LWPx/PaxHeader/UserAgent,LWPx-UserAgent-Cached-0.011/lib/LWPx/PaxHeader/UserAgent,LWPx-UserAgent-Cached-0.011/lib/LWPx/UserAgent/PaxHeader/Cached.pm,LWPx-UserAgent-Cached-0.011/lib/LWPx/UserAgent/PaxHeader/Cached.pm,LWPx-UserAgent-Cached-0.011/xt/PaxHeader/author,LWPx-UserAgent-Cached-0.011/xt/PaxHeader/author,LWPx-UserAgent-Cached-0.011/xt/author/PaxHeader/perltidy.rc,LWPx-UserAgent-Cached-0.011/xt/author/PaxHeader/perltidy.rc,LWPx-UserAgent-Cached-0.011/xt/author/PaxHeader/perlcritic.rc,LWPx-UserAgent-Cached-0.011/xt/author/PaxHeader/perlcritic.rc,LWPx-UserAgent-Cached-0.011/t/PaxHeader/000-report-versions.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/000-report-versions.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/006-cached-chi.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/006-cached-chi.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-test-version.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-test-version.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-dist-manifest.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-dist-manifest.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-cpan-changes.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-cpan-changes.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/etag.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/etag.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-kwalitee.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-kwalitee.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-critic.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-critic.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-unused-vars.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-unused-vars.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/is_cached.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/is_cached.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-mojibake.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-mojibake.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/004-cached.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/004-cached.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-pod-coverage.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-pod-coverage.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-meta-json.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-meta-json.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/00-compile.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/00-compile.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/cache_control.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/cache_control.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-portability.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-portability.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-eol.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-eol.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/TestCache.pm,LWPx-UserAgent-Cached-0.011/t/PaxHeader/TestCache.pm,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-pod-syntax.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-pod-syntax.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/005-custom-cache.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/005-custom-cache.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-minimum-version.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-minimum-version.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-pod-linkcheck.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-pod-linkcheck.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/pages,LWPx-UserAgent-Cached-0.011/t/PaxHeader/pages,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-synopsis.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-synopsis.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/cache_key.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/cache_key.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-no-tabs.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/author-no-tabs.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-distmeta.t,LWPx-UserAgent-Cached-0.011/t/PaxHeader/release-distmeta.t,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/9.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/9.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/5.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/5.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/4.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/4.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/8.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/8.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/3.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/3.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/2.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/2.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/1.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/1.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/10.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/10.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/7.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/7.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/6.html,LWPx-UserAgent-Cached-0.011/t/pages/PaxHeader/6.html