There's no normal reason that I can think of why a brand new character would fail to display unarmed attacks properly (either the base ones or HtH-skill versions). Do they show up in the basic character sheet ("charactersheet.gcs")? And/or do you see those traits in the Attributes tab's Table View?
You say that you reinstalled GCA. It's possible that something failed to install properly, that does happen from time to time, unfortunately. So, you might need to try again to see if that fixes your problem.
The latest program update is 4.0.423 (I think the current e23 installer is up to date, not 100% sure though).
The latest data update is 03APR2013, and is newer than the latest program update, so you should apply that as well after getting GCA 4.0.423 installed.
If nothing else, you could always ZIP up a character that's exhibiting the problem and e-mail it to me so that I can take a look at it.