fixed symmetric decrypting, stream didn't support .reset(), I guess, so now creating fresh streams where needed, and changed exception string to "" + e, rather than getMessage(), as that still can be null... annoying.

src/org/thialfihar/android/apg/Apg.java

@@ -465,7 +465,7 @@ public class Apg {
             } catch (UserIdEditor.NoEmailException e) {
                 throw new Apg.GeneralException(context.getString(R.string.error_userIdNeedsAnEmailAddress));
             } catch (UserIdEditor.InvalidEmailException e) {
-                throw new Apg.GeneralException(e.getMessage());
+                throw new Apg.GeneralException("" + e);
             }
 
             if (userId.equals("")) {