Smooth but page 404 error for every tag

Tag links give 404 error.

If corrected, some useful feature suggestions would be
– color range for different tag sizes (refer wp-cumulus where this option is not working)
– option for categories as well as tags
– change of color on hover (box as well as tag)
– font sizes based on number of posts per tag/category

good existing features:
hidden feature: mouse wheel controls the radius of sphere!
smooth effect.

http://wordpress.org/extend/plugins/cardoza-3d-tag-cloud/