Just did a clean install on a laptop of mine and there are (expansion, I believe) units missing from the Advanced K-bot lab and elsewhere. I remember having this problem three years ago when I tried installing it on a different computer and never could figure out the problem. They just show up as empty blanks in the build menus.

Anyone else have and solve this issue?

You're quite possibly missing the extra downloadable units that were distributed after the game's release.

There's a topic a few posts down with the installer ("Request: Please Add missing units") with download links for them.

Units Not Included: http://mch.hostedz.com/misc/cdunits.html

File Download: http://files.tauniverse.com/files/ta/official-files/

They should be included in the GOG install, but they aren't for some reason.