error while flashing tftp

[flintec]

i get a error when im flashing using the tfpt client
this is the output from the serial port from the arduino

ˆC¡*¥¹é Ariadne for Arduino Uno, Version 0.5
Net: EEPROM settings
Net: Address: 0xC0.0xA8.0x01.0x78
Net: Subnet: 0xFF.0xFF.0xFF.0x00
Net: Gateway: 0xC0.0xA8.0x01.0x01
Net: MAC: 0x12.0x34.0x56.0x78.0x9A.0xBC
Net: Network init done
Tftp: Init socket to port 0x0045
Tftp: TFTP server init done
Tftp: DataPort: 0xB779
Tftp: Processing packet of size 0x001E
Tftp: Set up return address
Tftp: This is block 0x426C with opcode 0x0002 and data length 0x0012
Tftp: Write request
Tftp: Init socket to port 0xB779
Tftp: Changed to port 0xB779
Tftp: Sent ACK
Tftp: Response sent
Tftp: Init socket to port 0x0045
Tftp: TFTP server init done
Tftp: DataPort: 0xB779
Tftp: Processing packet of size 0x001E
Tftp: Set up return address
Tftp: This is block 0x426C with opcode 0x0002 and data length 0x0012
Tftp: Write request
Tftp: Init socket to port 0xB779
Tftp: Changed to port 0xB779
Tftp: Sent ACK
Tftp: Response sent
Tftp: Init socket to port 0x0045
Tftp: TFTP server init done
Tftp: DataPort: 0xB779
Tftp: Processing packet of size 0x001F
Tftp: Set up return address
Tftp: This is block 0x0000 with opcode 0x0005 and data length 0x0013
Tftp: Error
Tftp: Response sent
Tftp: Processing packet of size 0x8613
Tftp: Overflow
Tftp: Set up return address
Tftp: This is block 0x979A with opcode 0x6D2C and data length 0xBCD4
Tftp: Invalid opcode 0x0000
Tftp: Init socket to port 0xB779
Tftp: Response sent
Tftp: Init socket to port 0x0045
Tftp: TFTP server init done
Tftp: DataPort: 0xB779

any ideas?