*.tgz doesn't download correctly for Math_BigInteger

I can install Math_BigInteger 1.0.1 via "pear install Math_BigInteger" but
when I do "wget
http://download.pear.php.net/package/Math_BigInteger-1.0.1.tgz" and then do
"tar -zxvf Math_BigInteger-1.0.1.tgz" I get the following error:

tar: A lone zero block at 10.

The package was built with "pear package" so I'm not convinced that going
that same route will fix the problem. And even if it could it would seem
that I can't just re-upload Math_BigInteger-1.0.1.tgz or even rename the
*.tgz and re-upload it. ie. it seems that I'd need to do a whole new 1.0.2
release to get an updated *.tgz out there even if no actual code changes
have been made.

Any ideas?

Thanks!