diff --git a/Changes.txt b/Changes.txt
index f14d734..ac9201a 100644
--- a/Changes.txt
+++ b/Changes.txt
@@ -4,6 +4,7 @@ Recent changes (since beta 4):
 - more explicit output for intruder-generated terms.
 - added switch '--errors=file' to redirect standard error output to a
   file.
+- Rewrote parts of the gui code for improved stability.
 
 
 
diff --git a/gui/Bin/scyther-linux b/gui/Bin/scyther-linux
deleted file mode 100755
index 543fdeb..0000000
Binary files a/gui/Bin/scyther-linux and /dev/null differ
diff --git a/gui/Bin/scyther-w32.exe b/gui/Bin/scyther-w32.exe
deleted file mode 100755
index 130063a..0000000
Binary files a/gui/Bin/scyther-w32.exe and /dev/null differ
diff --git a/gui/Bin/scytherview.py b/gui/Bin/scytherview.py
deleted file mode 100755
index 278c9da..0000000
--- a/gui/Bin/scytherview.py
+++ /dev/null
@@ -1,87 +0,0 @@
-#!/usr/bin/python
-#
-# Convert scyther dot output to a printable PDF and display it
-#
-# This is a simple hack to be able to quickly use the graphical output
-# of Scyther if one only has graphviz, but not elementtree and wxPython.
-#
-# Note 1: only works under Linux currently, because of silly assumptions
-# on temporary directories and pdf viewers.
-#
-# Note 2: this code assumes that both scyther-linux and dot can be found in the
-# environment (i.e. PATH variable)
-#
-import os,sys,commands
-import os.path
-
-tempcount = 0
-
-def generateTemp(extension='tmp'):
-    # We need a temporary file to hold the generated postscript stuff before
-    # it is converted to pdf
-    global tempcount
-
-    tempcount = tempcount + 1
-    tmp = '/tmp/output_dot_%s_%i.%s' % (os.getpid(),tempcount,extension)
-
-    try:
-        os.unlink(tmp)
-    except:
-        pass
-    return tmp
-
-def scyther_to_dotfile():
-    """ Run Scyther, return dotfile name """
-
-    scythername = "scyther-linux"
-    args = " ".join(sys.argv[1:])
-    tmpdotfile = generateTemp('dot')
-
-    command = "%s --plain --dot-output %s > %s" % (scythername, args, tmpdotfile)
-    output = commands.getoutput(command)
-    return (output,tmpdotfile)
-
-def dotfile_to_pdffile(dotfile,outfile=None):
-    """ Generate a PDF file (name is returned) from an input dotfile
-    name """
-
-    tmp = generateTemp('ps')
-
-    # First split the input per digraph and call dot with -Gsize arguments to make
-    # it fit to a landscape page
-    dotdata = open(dotfile, "r")
-    f = None
-    for line in dotdata.xreadlines():
-        if (line.find('digraph') == 0):
-            f = os.popen("dot -Gsize='11.0,8.0' -Gratio=fill -Tps >>%s" % (tmp),'w')
-        print >>f, line
-    dotdata.close()
-
-    if not f:
-        return None
-    f.close()
-
-    if not outfile:
-        outfile = generateTemp('pdf')
-
-    # Now convert the resulting stuff to a pdf
-    os.system('ps2pdf -sPAPERSIZE=a4 -g7014x5300 -r600 %s %s' % (tmp,outfile))
-    #os.system('ps2pdf -g8300x6250 -r600 %s %s' % (tmp,outf))
-
-    # And remove the temp file
-    os.unlink(tmp)
-
-    return outfile
-
-def main():
-    (output,dotfile) = scyther_to_dotfile()
-    print output
-    pdffile = dotfile_to_pdffile(dotfile)
-    os.unlink(dotfile)
-    if pdffile:
-        commands.getoutput("xpdf %s" % pdffile)
-        os.unlink(pdffile)
-    else:
-        print "No graphs generated."
-
-main()
diff --git a/gui/Scyther/__init__.py b/gui/Scyther/__init__.py
index b123ebf..b16dd9f 100644
--- a/gui/Scyther/__init__.py
+++ b/gui/Scyther/__init__.py
@@ -7,5 +7,5 @@
 import Scyther
 import os.path
 
-bindir = os.path.join(__path__[0],"..","Bin")
+bindir = os.path.join(__path__[0],"Bin")
 Scyther.setBinDir(bindir)