added missing import
@ -1,5 +1,6 @@
from PyQt4.Qt import QApplication, QMessageBox, QDialog, QInputDialog, QLineEdit, QVBoxLayout, QLabel, QThread, SIGNAL
import PyQt4.QtCore as QtCore
import threading
from electrum_gui.qt.password_dialog import make_password_dialog, run_password_dialog
from electrum.plugins import BasePlugin, hook