FPS_GT511C3 - Fingerprint Libraries

I'm a high school student working on a project. We are using the FPS_GT511C3 fingerprint scanner. We are having trouble getting our fingerprint scanner to work with a solenoid through arduino. The first problem we have is getting our arduino program to recognize the "FPS_GT511C3.h" library that we have downloaded.

Where did you put the library?
Did you restart the IDE after you had installed the library?

When we try to add the library to our arduino progam it says; "specified folder/zip file does not contain a valid library".

OK, thanks for letting us know.
Good luck with the rest of the project.

It doesn't allow us to install it...here are the steps we did.

  1. open arduino --> go to sketch --> include library --> add zip
  2. We select the zip file from the download folder.
  3. the arduino ide doesn't install the library...instead it pops an error "specified folder/zip file does not contain a valid library"

Can you help solve this problem? The library won't install