iConomy / Register API help

I have a plugin that needs to give money rewards but I am having trouble with the API's. I want to support as many economy plugins as possible so I tried using register, but when I try to check if a player has an account it gives me a NullExceptionError when I run it. Here is the relevant code:

PHP:

// Setup Economy
    Method economy = Methods.getMethod();
// ...
if(economy.hasAccount(player.getName()))
            {
            player.sendMessage(ChatColor.GREEN + player.getName());
            MethodAccount account = economy.getAccount(player.getName());
            account.add((double) getQuestConfig().getInt("0.market.reward.money"));
            }

Everything is imported correctly and the package is named differently than original register to avoid conflicts.

If there is a better plugin to work with many economies or if none of these work how would I work with iConomy.