[avrdude-dev] Can't write to flash?!?

[Justin Rajewski]

I got my AVRISP MKII today and got avrdude installed and working. All is
wired up correctly. I have a problem when I try to write to the flash, hex
files or bytes. Here is my problem...

sudo avrdude -c avrispmkII -P usb -p m644 -t
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e9609
avrdude> write flash 0 10
>>> write flash 0 10 
avrdude (write): error writing 0x0a at 0x00000 cell=0xff

I can write to eeprom or the fuses or even read/erase the flash. Any ideas?
The AVR is a brand new ATmega644-20PU.

Also the AVRISP2 does not seem to put out power of it's own. I had to power
the AVR externally but still connect the VCC and GND lines to get it to
work. Is that normal? 

I forgot to mention that I am using Ubuntu 8.04.

Thanks,
Justin
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