install on solaris - corruption

I am attempting to install j2sdk on solaris, using either the tar or the self-extraction method. I am able to download the file, but when trying to unpack it I get the following error:

uncompress: corrupt input

tar: directory checksum error

I used the following command for the tar file:

zcat j2sdk-1_4_2_03-solaris-sparc.tar.Z | tar xf -

I get the same error no matter which installation method I use.

If this makes a dfiference, I am actually downloading the file to Windows, then ftp'ing it to my unix box. (UNIX box is virtually empty, we are in the process of building it..)

[646 byte] By [kkrdi] at [2007-9-30 2:33:35]