I know this thread is somewhat dead but I thought I'd post this anyway, just so a solution in on this record. I'm using the Adobe Captivate Subscription version 8, but these steps have worked for me for as long as I can remember, for both subscription and product-based applications:
1. Sign in to your Adobe Account.
2. Click on Plans and Products Icon.
3. Under Order History, click on View Your Orders.
4. Click on the appropriate order for Captivate.
5. Under the product title you should see a download link. Click on that.
6. You should see all the related downloads including the Captivate application, NeoSpeech, and the eLearning Assets.
Following these steps I just tested and reinstalled the application and eLearning assets which includes a couple dozen characters sets with many poses per character.
Hint: I tend to avoid the Akamai downloader and download the files directly using the "+ Alternate Download Method" link. Just my preference.
The important thing to remember is that Adobe puts the product downloads in the orders section, not the product section. This seems counter-intuitive but they've done it the same way for years.
Hope this helps someone.