fix crash #1987

lib/base_wizard.py

@@ -208,7 +208,12 @@ class BaseWizard(object):
 
     def on_device(self, name, device_info):
         self.plugin = self.plugins.get_plugin(name)
+        try:
             self.plugin.setup_device(device_info, self)
+        except BaseException as e:
+            self.show_error(str(e))
+            self.choose_hw_device()
+            return
         if self.wallet_type=='multisig':
             # There is no general standard for HD multisig.
             # This is partially compatible with BIP45; assumes index=0