Hey Brian,
Doing an install on a 2013 farm we had a little error (it happens on first runs) and when we corrected and re-ran we got an error saying that the site collection already exists (strange I don't remember this happening in previous versions). I went through and deleted the site collections via powershell and voila. Ran just fine.
The difference this time is that I used the GUI front end to build the input XMLs... maybe there's something different about how that structures the script?
Doing an install on a 2013 farm we had a little error (it happens on first runs) and when we corrected and re-ran we got an error saying that the site collection already exists (strange I don't remember this happening in previous versions). I went through and deleted the site collections via powershell and voila. Ran just fine.
The difference this time is that I used the GUI front end to build the input XMLs... maybe there's something different about how that structures the script?