unable to view PHP file in Firefox

[nthom58]

I have the XAMPP control panel open and showing Apache running.
I have created an index.php file and placed in c:\xampp\htdocs\MyWebApp2. I try to open this file in Firefox and I get the message "Object not found, the requested URL was not found on this server. Up in the address bar I see the browser trying to open http:/localhost/MyWebApp2/index.php.
All my settings inserted when setting up a new site are:
Site Name: MyWebApp2
Local root folder: C:\xampp\htdocs\MyWebApp2
HTTP address: http://localhost/MyWebApp2/">http://localhost/MyWebApp2/">http://localhost/MyWebApp2/

Server model: PHP/MySQL
Access: Local network
Testing server folder: C:\xampp\htdocs\MyWebApp2
URL prefix: http://localhost/MyWebApp2/


Any ideas as to why the browser cannot find the file?
Thanks