Thank you Pete,
just on some websites language did not import correctly and it did show something like {text+email2future.....} instead of real text, in this case just download plugin,unzip it and try to import language pack manually(it's called langs.zip in plugin directory)
Good luck
I am planning to update this plugin soon
you can update it now by replacing the source of plugin or wait to automatically update it from admin area
Above is what it looks like.