I can't seem to get this to install/load/whatever_the_jargon_is in the Chrome Web Store tied to a Google Apps (for domains) account. Anybody have any idea what

I can't seem to get this to install/load/whatever_the_jargon_is in the Chrome Web Store tied to a Google Apps (for domains) account. Anybody have any idea what magic incantation I need to mutter/mutter/invoke?