Well I have been wasting my time trying to figure out why I can't respond to the other thread and now see that it has disappeared.
If pin 13 LED is blinking after successfully uploading your sample sketch then it looks like the Arduino is resetting. Maybe you have a power issue?
It seems to me that if the pin 13 LED is blinking after you have tried to upload your sketch then you have not been successful.
You have to troubleshoot your uploading problem first. Start out with the blinky sketch and see if you can successfully change the flashing rate by changing the delay times. If you can do that then you should also be able to upload your LCD code.
Display disconnected, tried power from wall wart on two different Arduino UNO R3's with same results.
Same as what?
Don