Thanks for the help.
OK. I've just finished two more fresh installs. I followed the guide exactly as written on the first computer. On the second computer I substituted the 32 bit architecture. I can confirm now with 3 installs that the APS Installer will NOT work, by following the guide located here:
I've also viewed the online demo of ISPConfig, and I noticed that the APS Installer doesn't work properly on there either. The online demo gives the exact same errors that I am having.
No packages to read in
2013-03-27 00:30 Error [INTERFACE]: APS crawler: No packages to read in
2013-03-27 00:30 Error [INTERFACE]: APS crawler: String could not be parsed as XML
Any help is appreciated. Thanks.