From ec1500860f402106525bc0b85eeb8fe457604c19 Mon Sep 17 00:00:00 2001
From: Jaime van Kessel <nallath@gmail.com>
Date: Tue, 7 Apr 2015 15:19:44 +0200
Subject: [PATCH] fixed exceptions caused by disconnecting printer

---
 PrinterApplication.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/PrinterApplication.py b/PrinterApplication.py
index 0fad7d5fc9..c7b71668d3 100644
--- a/PrinterApplication.py
+++ b/PrinterApplication.py
@@ -288,8 +288,9 @@ class PrinterApplication(QtApplication):
         self.outputDevicesChanged.emit()
 
     def removeOutputDevice(self, id):
-        del self._output_devices[id]
-        self.outputDevicesChanged.emit()
+        if id in self._output_devices:
+            del self._output_devices[id]
+            self.outputDevicesChanged.emit()
 
     @pyqtSlot(str)
     def writeToOutputDevice(self, device):