Ah I see. I just tried it and changing the extension to pdf works. the game installs the same file with the correct extension anyway so not a big problem.
OK, thanks. As you can probably tell I have not installed it yet so didn't know the files are the same.http://pcsupport.about.com/od/fileextensions/f/ashxfile.htm
Question: What is an ASHX File?
Did you find an ASHX file on your computer and wonder what program should open it? Maybe someone emailed you an ASHX file but you're not sure how to use it. Perhaps you tried to open the ASHX file but Windows told you that it could not open it.
Before you can open an ASHX file (assuming it's even a file format that's intended to be viewed or edited), you'll need to determine what kind of file the ASHX file extension refers to.
Answer: A file with the ASHX file extension is an ASP.NET Web Handler file.
Now, knowing that, how is it a pdf file if the extension is .ashx?