Dump problem tx to temporary file when error happens. This allows developers to debug failed transactions from users by having access to the raw tx dump to see what is wrong.

This would useful in the pro-mode GUI. There should be implemenation for the send method between both these GUIs rather than having their own copy-pasted version. Also the fee system needs fixing.

lib/gui_lite.py

@@ -659,6 +659,11 @@ class MiniActuator:
             
         status, message = self.wallet.sendtx(tx)
         if not status:
+            import tempfile
+            dumpf = tempfile.NamedTemporaryFile(delete=False)
+            dumpf.write(tx)
+            dumpf.close()
+            print "Dumped error tx to", dumpf.name
             QMessageBox.warning(parent_window, _('Error'), message, _('OK'))
             return False