Got that error while installing 0.9.5 from Google Webstore or from local folder. 0.9.4 installing well.
Chrome version 23.0.1271.91 m.
Thank you for this report. I suspect there's a text string undefined in your language and it's not falling back to the English text. Are you not running Chrome in English? If so, what language are you using?
I found some problems with the translation service which affects nearly all non-English translations. Sorry about this. I've submitted a support ticket and hopefully they can help resolve this issue shortly.
I'm using Russian. I try to change chrome lang and then install. It's installed. Then I change lang back to Russian and the options looks like this http://take.ms/IIi
This should be fixed in v0.9.6 which I just published. I was able to switch my language to Russian and install the extension. Please let me know if you still have problems.
I'v just updated from Google Webstore. Now it's installs and work with no problems.