Problem Loading Glyph

I am unable to install Glyph at about half way through I get the message: "Installer is unable to extract some files. Please close all app windows and try again."
Does anyone have any idea what I can do? Thank you

Are you installing Glyphs from the AppStore?

I have problem: when i started Glyph it started to updating bud near end it gives me an error: download failed code #18 HTTP #0


Which version of Glyphs, OS X?