Thanks for reporting this.
There are two mode of Catalyst installation: 1) Install Driver <Os version> on X.org 6.9 or later and 2) Generate Distribution Specific Driver Package (Default). I guess, you've tried with option 1. During Catalyst installation, please select the other mode of installation and then try to build and run the samples. If still face the same problem, please let us know.
Note: The current SDK installer creates a symbolic link that depends on this specific mode of Catalyst installation. This is a known bug and to be solved in next installer package.