Fix bug where second and subsequent file load would cause an error and refuse...

Fix bug where second and subsequent file load would cause an error and refuse to load further files. Closes #102

pronterface.py

@@ -1262,7 +1262,8 @@ class PronterWindow(wx.Frame,pronsole.pronsole):
         except:
             self.filename=fn
         wx.CallAfter(self.loadbtn.SetLabel,_("Load File"))
-        wx.CallAfter(self.status.SetStatusText,_("Slicing cancelled."))
+        self.skeining=0
+        self.skeinp=None
         
         
     def skein(self,filename):