Solves mysterious issue

When running relational as an .exe file generated by
py2exe, that line might give an exception. Because of
reasons.

I don't know what the hell is going on and I don't care.

relational/maintenance.py

@@ -107,7 +107,10 @@ class UserInterface (object):
         Either from bytes or from a file
         '''
         if session:
-            self.relations = pickle.loads(session)
+            try:
+                self.relations = pickle.loads(session)
+            except:
+                pass
         elif filename:
             with open(filename) as f:
                 self.relations = pickle.load(f)