I think this error will be common for users - perhaps capture it and display the english error?
$ route53
...
An Error has occured
SenderOptInRequiredThe AWS Access Key Id needs a subscription for the service7ed72d75-03e5-11e0-9bde-d11c7fd928aa
/Library/Ruby/Gems/1.8/gems/route53-0.1.3/lib/route53/cli.rb:209:in `process_arguments': undefined method `each' for nil:NilClass (NoMethodError)
from /Library/Ruby/Gems/1.8/gems/route53-0.1.3/lib/route53/cli.rb:30:in `run'
from /Library/Ruby/Gems/1.8/gems/route53-0.1.3/bin/route53:11
from /usr/bin/route53:19:in `load'
from /usr/bin/route53:19
Thanks for the bug report.
I've added in some helper text to explain to users what was going on for some of the more common errors. The latest version is 0.1.4 and is up on both github and rubygems.
I think this error will be common for users - perhaps capture it and display the english error?