I know this problem is a few months old, but there seems to be an issue during installation causing the config scripts not to run. I'm not sure what causes it (I tried on a fresh windows install), and reinstalling manually from the extracted setup as suggested by another thread didn't work for me either. The solution I found was to run them manually after installing RaidXpert.
From an elevated command prompt:
cd 'C:\Program Files (x86)\RAIDXpert2\'