attempt to fix exception catching

src/buskill_gui.py

@@ -172,7 +172,9 @@ def toggle_buskill(self):
 			# buskill failed to arm/disarm; tell the user
 
 			msg = "Unable to toggle buskill state"
-			msg += "\n\n" +str(e)
+			# TODO: why is 'e' not defined?
+			#msg += "\n\n" +str(e)
+			msg += "\n\nException: " +str(self.bk.usb_handler.exception[0])
 			print( msg )
 			self.dialog = DialogConfirmation(
 			 title = '[font=mdicons][size=30]\ue002[/size][/font] Error',

src/packages/buskill/__init__.py

@@ -1125,8 +1125,7 @@ def check_usb_handler( self, dt ):
 				self.usb_handler.status += 1
 
 			if queue_message == 'exception':
-				# the child just wants to let us know that it's alive; increment
-				# the status instance field for the child process
+				# the child through an exception; mark it
 				self.usb_handler.exception = True
 
 			else:
@@ -1152,6 +1151,9 @@ def simulate_hotplug_removal( self ):
 	# this works for both linux and mac
 	def armNix( self ):
 
+		# TODO remove me (exception catching testing)
+		#raise Exception( 'this is a test exception' )
+
 		# are we just simulating this USB removal?
 		if self.SIMULATE_HOTPLUG_REMOVAL:
 			# we're simulating a removal event
@@ -1710,7 +1712,7 @@ def run(self):
 				print( msg ); logger.debug( msg )
 
 				self._cconn.send((e, tb))
-				self.usb_handler_queue.put( 'exception' )
+				raise e
 
 		@property
 		def exception(self):