[SunHELP] unable to add packagew

[Sen]

hi,
i encounter the following error when trying to add a package:

bash-2.03# pkgadd -d gcc-3.0.3-sol8-intel-local.gz


The following packages are available:
  1  SMCgcc3     gcc
                 (i386) 3.0.3


Select package(s) you wish to process (or 'all' to process
all packages). (default: all) [?,??,q]:

Processing package instance <SMCgcc3> from
</downloads/gcc-3.0.3-sol8-intel-local.gz>

gcc
(i386) 3.0.3
cpio: Bad magic number/header.
1 errors
pkgadd: ERROR: attempt to process datastream failed
    - process </usr/bin/cpio -icdumD -C 512> failed, exit code 1
pkgadd: ERROR: unable to unpack datastream

Installation of <SMCgcc3> failed (internal error).
No changes were made to the system.

any help?
thanks