Wonky on upload

I have tried uploading files with a session queue and it kept working fine and then it seemed to practically trip over itself. Look at the end of this log...

150 Opening BINARY mode data connection for TheLandmarkAtMonasteryHeightsreview.html.
10989 bytes transferred. (7.00 KB/s) (00:00:01)
226 Transfer complete.
SIZE TheLandmarkAtMonasteryHeightsreview.html
213 10989
Remote file exist check: 'TheLandmarkAtOceanviewreview.html'.
SIZE TheLandmarkAtOceanviewreview.html
213 11078
MDTM TheLandmarkAtOceanviewreview.html
213 20051109221316
PORT 192,168,0,100,6,3
200 PORT command successful.
STOR TheLandmarkAtOceanviewreview.html
500 'R TheLandmarkAtOceanviewreview.html': command not understood
500 'L': command not understood

Where it looks to me as though it thought the first three letters of STOR were missing. Once it does that, it won't let me transfer again. The only way I've been able to figure it out was to try to refresh several times. Eventually the file list comes back and it will take about ten more files of the transfer. I've tried adjusting the transfer speed and several other things but I can't figure it out and don't know what to look for in the support files.

JEAG

Hello ..

The problem you are seeing is caused either by a buggy FTP server software (unlikely) or a buggy NAT router. The workaround is to use the global queue for all your transfers. Tutorials can be found at:
https://www.smartftp.com/support/tutorials

Regards,
SmartFTP