unable to install Google's Droid Sans Mono font I've downloaded Droid Sans, Droid Serif, and Droid Sans Mono fonts from google.com/fonts and the first two have installed just fine.

OS X 10.9.5. I'm extracting the font file from the download ZIP file, double-clicking the TTF file, then clicking "Install". 

Unfortunately, I can't get Droid Sans Mono to install; it looks like some message boxes pop up very quickly, but I can't read what they say. When I validate the font file, it looks okay, but installation doesn't do anything.

Using the Console app, the following messages appeared during the time I try to install the font:

4/20/15 1:36:22.068 PM taskgated[19]: binary have embedded signature that validated /System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/QuickLookUI.framework/Versions/A/Resources/QuickLookUIHelper.app[24856]
4/20/15 1:36:22.105 PM QuickLookUIHelper[24856]: LSExceptions [0x7fe5f0707e30] loaded
4/20/15 1:36:22.112 PM Finder[1250]: LSExceptions [0x6180002b4640] loaded
4/20/15 1:36:22.125 PM lsboxd[1281]: Connection from pid 24856


Any idea what I might be doing wrong?
I was able to install it from fontsquirrel on my mac osx version 10.13.3. Try it out