Error 550: Can't check for file existence

Hi. I'm trying to upload files client to server, and i get error 550 Can't check for file existence. The Knowlege Base claims that you can just ignore this error, but when I do the file doesnt upload and just sits there, retyring every few minutes and getting the same error. Here's part of my log:

[17:19:59] 227 Entering Passive Mode (64,136,20,53,45,93)
[17:19:59] Opening data connection to 64.136.20.53 Port: 11613
[17:19:59] MLSD
[17:19:59] 150 Accepted data connection
[17:19:59] 226-Options: -l
[17:19:59] 226 0 matches total
[17:19:59] 0 bytes transferred. (0 bytes/s) (203 ms)
[17:20:23] MLST wassat.gif
[17:20:23] 550 Can't check for file existence
[17:20:23] MLST wink.gif
[17:20:23] 550 Can't check for file existence
[17:20:23] MLST .htaccess
[17:20:24] 550 Can't check for file existence
[17:20:24] MLST angry.gif
[17:20:24] 550 Can't check for file existence
[17:20:24] MLST crying.gif
[17:20:24] 550 Can't check for file existence
[17:20:24] MLST index.html
[17:20:24] 550 Can't check for file existence
[17:20:24] MLST laughing.gif
[17:20:24] 550 Can't check for file existence
[17:20:24] MLST sad.gif
[17:20:24] 550 Can't check for file existence
[17:20:24] MLST smile.gif
[17:20:25] 550 Can't check for file existence
[17:20:25] MLST tongue.gif
[17:20:25] 550 Can't check for file existence

I really don't know how to fix this, and I really need to upload these files. Theres a lot of them. Oh, and if it helps, i'm trying to upload all the files for cutenews.

EDIT

Turns out it does work, I just have to wait 20 minutes for each file. I'm slowly getting them up, but its even slower than manually uploading them 1 by one, so theres not much point. After a while I get this:

[16:59:42] 230 OK. Current directory is /
[16:59:42] SYST
[16:59:42] 215 UNIX Type: L8
[16:59:42] Detected Server Type: UNIX
[16:59:42] FEAT
[16:59:42] 211-Extensions supported:
[16:59:42] EPRT
[16:59:42] IDLE
[16:59:42] MDTM
[16:59:42] SIZE
[16:59:42] REST STREAM
[16:59:42] MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;
[16:59:42] MLSD
[16:59:42] TVFS
[16:59:42] ESTP
[16:59:42] PASV
[16:59:42] EPSV
[16:59:42] SPSV
[16:59:42] ESTA
[16:59:42] 211 End.
[16:59:42] Detected Server Software: PureFTPd
[16:59:42] PWD
[16:59:43] 257 "/" is your current location
[16:59:43] CWD /cutenews/data/archives
[16:59:43] 250 OK. Current directory is /cutenews/data/archives
[16:59:43] PWD
[16:59:44] 257 "/cutenews/data/archives" is your current location
[16:59:44] MLST index.htm
[16:59:45] 250-Begin
[16:59:45] type=file;size=117;modify=20080524155631;UNIX.mode=0644;UNIX.uid=1000;UNIX.gid=1
000;unique=16g1ed597d; index.htm
[16:59:45] 250 End.

Thanks.
~Sub12

Post the log from the Transfer Queue. It looks like your transfers are failing for some reason and SmartFTP automatically retries them.