I have posted this in the AA forum by mistake, hopefully it will get more exposure and a solution here....thanks.
I've been getting the above message when I try to install AA2010, AA2011, Revit Arch 2010 or Revit Arch 2011 on my XPsp3 machine. I've tried reinstalling all of the .Net components, I've tried switching to an Admin user even though I do have admin rights, I've tried tweaking the setup.ini file as suggested in another thread but nothing works. I am able to install 2009 versions but nothing more recent. Any help would be appreciated.