Having trouble with the NewPing Library

I have a project due in two weeks, everything else is completed but the program. So, a response is needed ASAP. I've installed the NewPing Library and I have followed the correct steps to make sure that the library is on there. When I compile my code or even compile an example code its still saying that NewPing does not name a type. I've added AFMotors Library the same exact way and it's on there and works like a charm. Can someone please help me out to what the problem really is? Should I uninstall Arduino completely and reinstall and try it that way, or what? I'd deeply appreciate any and everybody that is able to help, and I thank you in advance.

Chanel

can you tell:

  • which version of the Arduino IDE you are using?
  • the version of the newPing library?