verification error

Development Tools IDE 1.x
1

Hi,

after testing the Hello World from the examples of the LiquidCrystal Library for many hours my Duemilanovedoes not work any longer. When I try to upload something there is a message

avrdude: verification error, first mismatch at byte 0x0000
0x0c != 0x00
avrdude: verification error; content mismatch

The RESET switch did not help.
What can I do?

Volker

2

Disconnect everything from the board except the USB cable and try again.

3

I tried that already. No success.
Volker

4

Are you certain the correct board is selected?

5

It is the correct board. After first uploading it worked correctly. Then I disconnected the USB-connection and connected to battery. It worked for several hours. When the battery was weak I connected to a new one an got the the error message.

6

Does the board pass or fail a loop-back test...
http://arduino.cc/forum/index.php/topic,73748.0.html

7

It passes the test.
When I compared with a second board I realised, that TX-LED is permanent ON while is is OFF after uploading at the working board.

Volker

8

Immediately after clicking the reset button, is the TX LED on solid?