Handle AccountManager failures so Shell doesn't crash.

            preferredDomain = "@" + preferredDomain;

        }

        final Account[] accounts = am.getAccounts();

        final Account[] accounts;

        try {

            accounts = am.getAccounts();

        } catch (RuntimeException e) {

            Log.e(TAG, "Could not get accounts for preferred domain " + preferredDomain, e);

            return null;

        }

        if (DEBUG) Log.d(TAG, "Number of accounts: " + accounts.length);

        Account foundAccount = null;

        for (Account account : accounts) {

            if (Patterns.EMAIL_ADDRESS.matcher(account.name).matches()) {