diff --git a/gui/Scyther.py b/gui/Scyther.py
index 9b61a5a..62025e0 100755
--- a/gui/Scyther.py
+++ b/gui/Scyther.py
@@ -72,13 +72,16 @@ class Scyther(object):
         # from the error output (maybe this can also be done by flushing
         # the XML at certain points...)
         xmlinput = stdout.read()
-        self.errors = stderr.readlines()
+        errlines = stderr.readlines()
 
         # filter out any non-errors (say maybe only claim etc) and count
         # them.
-        # TODO for now this simply counts the lines
+        self.errors = []
+        for l in errlines:
+            if not l.startswith("claim\t"):
+                self.errors.append(l.strip())
+
         self.errorcount = len(self.errors)
-        print self.errorcount
         
         # close
         stdout.close()
diff --git a/gui/Scytherthread.py b/gui/Scytherthread.py
index 1ec8f52..0bacf4d 100644
--- a/gui/Scytherthread.py
+++ b/gui/Scytherthread.py
@@ -181,7 +181,7 @@ class ErrorWindow(wx.Dialog):
         line = wx.StaticLine(self, -1, size=(20,-1), style=wx.LI_HORIZONTAL)
         sizer.Add(line, 0, wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.RIGHT|wx.TOP, 5)
 
-        label = wx.StaticText(self, -1, "".join(errors))
+        label = wx.StaticText(self, -1, "\n".join(errors))
         sizer.Add(label, 0, wx.ALIGN_LEFT|wx.ALL, 5)
 
         sizer.Add(line, 0, wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.RIGHT|wx.TOP, 5)
diff --git a/gui/scyther-gui.py b/gui/scyther-gui.py
index 3d6a8ff..09071ca 100755
--- a/gui/scyther-gui.py
+++ b/gui/scyther-gui.py
@@ -4,6 +4,7 @@
 
 """ Import externals """
 import wx
+import sys
 
 #---------------------------------------------------------------------------
 
@@ -63,7 +64,15 @@ class ScytherApp(wx.App):
         splash.Show()
 
         """ Build up """
-        self.mainWindow = Mainwindow.MainWindow('scythergui-default.spdl')
+        infile = ''
+        args = sys.argv[1:]
+        if len(args) > 0:
+            if args[0] == 'test':
+                infile = 'scythergui-default.spdl'
+            else:
+                infile = args[0]
+
+        self.mainWindow = Mainwindow.MainWindow(infile)
         self.SetTopWindow(self.mainWindow)
         self.mainWindow.Show()