Shopify/active_merchant — pull request #826 by duff (2013-08-26 20:42:09+00:00)
Title: Balanced: Adjust BalancedGateway::Error parent

It's now ActiveMerchant::ActiveMerchantError rather than StandardError.
We want to allow users of ActiveMerchant to generically rescue errors
without having to have special gateway specific handling.