This handle is invalid error message

Hey all! I just got an arduino not to long ago and was going through all of the built in examples and decided to try an RFID Reader/Writer. I downloaded all the libraries suggested for the writer and then found a sketch for the writer to go with the libraries. When i went to verify the sketch the error sketch came up: Arduino: 1.6.7 Hourly Build 2015/11/27 03:44 (Windows 7), Board: "Arduino/Genuino Uno"

read C:\Users\Shawn\Documents\Arduino\libraries\RFID\library.properties: The handle is invalid.

Error compiling.

Any help? This is a project for my engineering class and need help.

Does it work on 1.6.5? That seems to be the most stable recent release (1.6.6 has some issues), and I know they've been messing with How they handle library.properties files.

Generally, don't use hourly builds unless you're an expert - hourly builds should be expected to be buggy.

DrAzzy: That seems to be the most stable recent release (1.6.6 has some issues)

I had some issues with 1.6.5 as well so for no I'm at 1.6.4 :p