This issue is resolved. Basically, the customer had 2 issues:
1) The product is tested and certified on Red Hat Enterprise Server, and he was trying to install it on Red Hat Enterprise Workstation; the installer fails because it does not recognize Workstation.
2) There were several packages required by the product that were missing on the customer's machine. The required packages are listed in the Release Notes document for the product.
Once the customer addressed these two issues, the install worked.