5.1.49 pkg downloads Solaris 10, when gunzipped are not recognised. (1 reply)

I downloaded
mysql-5.1.49-solaris10-x86_64.pkg.gz ;

mysql-5.1.49-solaris10-sparc-64bit.pkg.gz ; and

mysql-5.1.49-solaris10-i386.pkg.gz .

I compared md5 checksums. O.K..

Gunzipped files , even put them in /var/spool/pkg .

Neither of the three architechtures recognised the gunzipped .pkg files as valid packages [on their respective machines].

I changed the filenames to contain only one dot [before.pkg], and tried again.

No joy.

Please illuminate my dimly lit knowledge bases.

Any ideas?