I have verified that I have installed the latest apache2, apache2-bin, apache2-dev, apache2-mpm-prefork, apache2-utils, apache2.2-bin, and apache2.2-common. The apache2-dev package is supposed to include aspx2 located in /usr/bin, but it's not there.
I removed and reinstalled apache2-dev, but aspx2 is still not being installed on my system. If you know how to resolve this issue, I would appreciate the help.