Question : Cisco Pix 515E (6.3) TFTP config

I have set up a tftp server (Kiwi) but get this error when trying to backup our config. Any help is appreciated.

TFTP write 'pix515e.bin' at 192.168.0.251 on interface 1
Access violation
[FAILED]

Answer : Cisco Pix 515E (6.3) TFTP config

Is your TFTP server set up to read AND write?