Packer3d Nano is discontinued.
Packer3d Nano version is discontinued effective December 15th, 2008.
The last available release is v. 3.3 build 75.
Packer3d Nano version will continue to be supported until at least December 31st, 2009.
Links:
[1] http://www.packer3d.com/user/4
[2] http://www.packer3d.com/taxonomy/term/12