Permission denied on server.

I cannot upload my feed.

553 supercrossking.txt: Permission denied on server. (Overwrite)
TYPE A
200 Type set to A.
PASV
227 Entering Passive Mode (216,239,45,39,177,247)
Opening data connection to 216.239.45.39 Port: 45559
LIST -aL
150 Opening ASCII mode data connection for directory listing.
205 bytes transferred. (1.17 KB/s) (170 ms)
226 Transfer complete.
Transfer failed.
I'm using SmartFTP to ftp the files.

Today I tried using Internet Explorer and noticed that the txt file was
still there. Is Froggle not processing my file?