Minor restructuring and fallback error even even tkInter is not installed.

gui/Scyther/Misc.py

@@ -125,7 +125,11 @@ def panic(text):
     on the command line and reported using Tkinter.
     """
 
+    try:
         import Tkinter
+    except:
+        print text
+        sys.exit(-1)
     
     print text
 

gui/scyther-gui.py

@@ -21,6 +21,8 @@
 
 #---------------------------------------------------------------------------
 
+""" Import externals """
+import sys
 
 #---------------------------------------------------------------------------
 
@@ -29,9 +31,7 @@ from Gui import About,Preference,Mainwindow
 from Scyther import Scyther,Misc
 
 #---------------------------------------------------------------------------
-
-""" Import externals """
-import sys
+# Try to get wxPython
 try:
     import wx
 except ImportError:
@@ -50,6 +50,8 @@ version number.
 Note that you can still use the Scyther binaries in the 'Scyther' directory.
     """)
 
+#---------------------------------------------------------------------------
+
 import os
 from optparse import OptionParser, SUPPRESS_HELP
 from subprocess import *