Remember your attempts to teach before was with a directv remote in RF mode, no IR. Now that is in IR you will be able teach without any trouble. But for cleaner learns, see the directv remote adds an extra signal to each command. To turn off this extra signal:

1. dtv
2. press and hold MUTE & SELECT, wait for two blinks, release
3. enter 9 6 3
4. press CH DOWN

Now teach.


As for vizio, sorry no experience with Urc remotes and vizios. Hope someone else will chime in.