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/WebService-Jina-0.02,PaxHeader/WebService-Jina-0.02,WebService-Jina-0.02/PaxHeader/Changes,WebService-Jina-0.02/PaxHeader/Changes,WebService-Jina-0.02/PaxHeader/MANIFEST,WebService-Jina-0.02/PaxHeader/MANIFEST,WebService-Jina-0.02/PaxHeader/ignore.txt,WebService-Jina-0.02/PaxHeader/ignore.txt,WebService-Jina-0.02/PaxHeader/t,WebService-Jina-0.02/PaxHeader/t,WebService-Jina-0.02/PaxHeader/xt,WebService-Jina-0.02/PaxHeader/xt,WebService-Jina-0.02/PaxHeader/README,WebService-Jina-0.02/PaxHeader/README,WebService-Jina-0.02/PaxHeader/META.yml,WebService-Jina-0.02/PaxHeader/META.yml,WebService-Jina-0.02/PaxHeader/lib,WebService-Jina-0.02/PaxHeader/lib,WebService-Jina-0.02/PaxHeader/Makefile.PL,WebService-Jina-0.02/PaxHeader/Makefile.PL,WebService-Jina-0.02/PaxHeader/META.json,WebService-Jina-0.02/PaxHeader/META.json,WebService-Jina-0.02/lib/PaxHeader/WebService,WebService-Jina-0.02/lib/PaxHeader/WebService,WebService-Jina-0.02/lib/WebService/PaxHeader/Jina.pm,WebService-Jina-0.02/lib/WebService/PaxHeader/Jina.pm,WebService-Jina-0.02/lib/WebService/PaxHeader/Jina,WebService-Jina-0.02/lib/WebService/PaxHeader/Jina,WebService-Jina-0.02/lib/WebService/Jina/PaxHeader/Response.pm,WebService-Jina-0.02/lib/WebService/Jina/PaxHeader/Response.pm,WebService-Jina-0.02/lib/WebService/Jina/PaxHeader/UA.pm,WebService-Jina-0.02/lib/WebService/Jina/PaxHeader/UA.pm,WebService-Jina-0.02/xt/PaxHeader/boilerplate.t,WebService-Jina-0.02/xt/PaxHeader/boilerplate.t,WebService-Jina-0.02/t/PaxHeader/pod.t,WebService-Jina-0.02/t/PaxHeader/pod.t,WebService-Jina-0.02/t/PaxHeader/manifest.t,WebService-Jina-0.02/t/PaxHeader/manifest.t,WebService-Jina-0.02/t/PaxHeader/00-load.t,WebService-Jina-0.02/t/PaxHeader/00-load.t,WebService-Jina-0.02/t/PaxHeader/pod-coverage.t,WebService-Jina-0.02/t/PaxHeader/pod-coverage.t