diff --git a/gui/Gui/Settingswindow.py b/gui/Gui/Settingswindow.py
index cbd75d5..b9fb4c6 100644
--- a/gui/Gui/Settingswindow.py
+++ b/gui/Gui/Settingswindow.py
@@ -77,8 +77,8 @@ class SettingsWindow(wx.Panel):
         ### MISC expert stuff
         grid.titleAdd("Advanced parameters")
 
-        # Bound on the number of classes/attacks
-        self.maxattacks = int(Preference.get('maxattacks','100'))
+        # Bound on the number of patterns
+        self.maxattacks = int(Preference.get('maxattacks','10'))
         stname = Claim.stateDescription(True,2,False)
         atname = Claim.stateDescription(False,2,False)
         txt = "%s/%s" % (stname,atname)
diff --git a/gui/Scyther/Scyther.py b/gui/Scyther/Scyther.py
index e843c5c..aafb99c 100755
--- a/gui/Scyther/Scyther.py
+++ b/gui/Scyther/Scyther.py
@@ -19,10 +19,10 @@ from Misc import *
 
 #---------------------------------------------------------------------------
 
-""" Globals """
-bindir="../Bin"
-
-#---------------------------------------------------------------------------
+"""
+The default path for the binaries is set in __init__.py in the (current)
+directory 'Scyther'.
+"""
 
 def setBinDir(dir):
     global bindir
@@ -36,41 +36,48 @@ def getBinDir():
 
 #---------------------------------------------------------------------------
 
+def getScytherBackend():
+    # Where is my executable?
+    #
+    # Auto-detect platform and infer executable name from that
+    #
+    if "linux" in sys.platform:
+
+        """ linux """
+        scythername = "scyther-linux"
+
+    elif "darwin" in sys.platform:
+
+        """ OS X """
+        # Preferably, we test for architecture (PPC/Intel) until we
+        # know how to build a universal binary
+        scythername = "scyther-osx"
+
+    elif sys.platform.startswith('win'):
+
+        """ Windows """
+        scythername = "Scyther.exe"
+
+    else:
+
+        """ Unsupported"""
+        print "ERROR: I'm sorry, the %s platform is unsupported at the moment" % (sys.platform)
+        sys.exit()
+
+    program = os.path.join(getBinDir(),scythername)
+    if not os.path.isfile(program):
+        print "I can't find the Scyther executable at %s" % (program)
+        return None
+
+    return program
+
+#---------------------------------------------------------------------------
+
 class Scyther(object):
     def __init__ ( self):
-        global bindir
-
-        # Where is my executable?
-        #
-        # Auto-detect platform and infer executable name from that
-        #
-        prefix = os.path.abspath(bindir)
-        if "linux" in sys.platform:
-
-            """ linux """
-            self.program = os.path.join(prefix,"scyther")
-
-        elif "darwin" in sys.platform:
-
-            """ OS X """
-            # Preferably, we test for architecture (PPC/Intel) until we
-            # know how to build a universal binary
-            self.program = os.path.join(prefix,"scyther-osx")
-
-        elif sys.platform.startswith('win'):
-
-            """ Windows """
-            # TODO hardcoded for now, bad
-            self.program = os.path.join(prefix,"Scyther.exe")
-            if not os.path.isfile(self.program):
-                print "I can't find the Scyther executable at %s" % (self.program)
-        else:
-
-            """ Unsupported"""
-            print "ERROR: I'm sorry, the %s platform is unsupported at the moment" % (sys.platform)
-            sys.exit()
 
         # Init
+        self.program = getScytherBackend()
         self.spdl = None
         self.inputfile = None
         self.options = ""
@@ -105,6 +112,10 @@ class Scyther(object):
         fp.close()
 
     def verify(self):
+        """ Should return a list of results """
+
+        if self.program == None:
+            return []
 
         # Run Scyther on temp file
         self.cmd = "\"%s\"" % self.program
diff --git a/gui/Scyther/__init__.py b/gui/Scyther/__init__.py
index 7e32c73..b123ebf 100644
--- a/gui/Scyther/__init__.py
+++ b/gui/Scyther/__init__.py
@@ -5,5 +5,7 @@
 #   order to correctly find the executables
 #
 import Scyther
+import os.path
 
-Scyther.setBinDir(__path__[0])
+bindir = os.path.join(__path__[0],"..","Bin")
+Scyther.setBinDir(bindir)
diff --git a/src/copy2ecss.sh b/src/copy2ecss.sh
deleted file mode 100755
index 8581e59..0000000
--- a/src/copy2ecss.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/sh
-
-SVNDIR=https://svn.win.tue.nl/repos/ecss/trunk/protocols/spdl/scyther
-TMPDIR=/tmp/ecsslatesscyther
-VERSIONFILE=$TMPDIR/version.txt
-SCYTHER=$TMPDIR/scyther
-
-rm -rf $TMPDIR
-svn co $SVNDIR $TMPDIR
-cp scyther $SCYTHER
-$SCYTHER --version >$VERSIONFILE
-cat $VERSIONFILE
-svn commit --file $VERSIONFILE $SCYTHER
-
-echo "Committed this version to the ECSS repository."
diff --git a/src/copy2gui.sh b/src/copy2gui.sh
new file mode 100755
index 0000000..3dc48bb
--- /dev/null
+++ b/src/copy2gui.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+cp scyther-linux ../gui/Bin
+