diff -Nur -x '*.orig' -x '*.rej' anaconda-10.1.1.37/dispatch.py mezzanine_patched_anaconda-10.1.1.37/dispatch.py
--- anaconda-10.1.1.37/dispatch.py	2005-07-09 07:36:02.000000000 +1000
+++ mezzanine_patched_anaconda-10.1.1.37/dispatch.py	2006-04-06 05:34:57.353093046 +1000
@@ -175,7 +175,8 @@
         # we can not go backwards from this screen
         i = self.step - 1
         while i >= self.firstStep:
-            if not self.skipSteps.has_key(installSteps[i][0]):
+            if (not self.skipSteps.has_key(installSteps[i][0])
+                and (type(installSteps[i][1]) != FunctionType)):
                 return 1
             i = i - 1
         return 0
diff -Nur -x '*.orig' -x '*.rej' anaconda-10.1.1.37/text.py mezzanine_patched_anaconda-10.1.1.37/text.py
--- anaconda-10.1.1.37/text.py	2006-04-06 05:37:06.528342370 +1000
+++ mezzanine_patched_anaconda-10.1.1.37/text.py	2006-04-06 05:35:35.058745900 +1000
@@ -506,7 +506,8 @@
                                          "from here. You will have to try "
                                          "again."),
                                        buttons=[_("OK")])
-		dispatch.gotoPrev()
+		else:
+		    dispatch.gotoPrev()
 	    else:
 		dispatch.gotoNext()