The plugin is really great. I noticed that flags are shown incorrectly in the Multisite settings screen.
For example, my native language, Bosnian, has a flag of The Bahamas instead of Bosnia & Herzegovina. I believe the error occurred because of the different ISO codes for countries and languages. ISO code for Bosnian is 'bs' and for Bosnia it's 'ba'.
This only happens in settings. Flags are displayed correctly on the site.
We are currently mapping all the locales found in the WordPress language file repository. Incorrect flags can be reported here, thank you!
Not sure if this is technically a bug, but the flag when you select English uses the 'en.gif' image which is the 'English' flag (white with red cross). It would be nice if maybe the selection drop down also offered an English (US) option that would use a US flag image. For now I simply selected English as the blog language and then inserted '/wp-content/plugins/inpsyde-multilingual-press/flags/us.gif' as the 'Blog flag image URL' value.
Should be okay with version 0.7.4a, that I just commited.
update is fine and go live with 0.7.5a on SVN of wp.org