how often do you get this "error:error" error?
if you can reproduce it often?
try to use older build of FlashFXP (like 835) see if it'll make any difference
i don't know if it can be fixed. it seems like this is ftpd error. but at the same time another user said that supposedly he doesn't get this problem with another client..which i don't see how it could be possible becuase both clients do exactly same thing.
i emailed to bpftpd support with request to help, but either they are ignoring me or didn't get to my msg yet.
we'll need to troubleshoot this problem further to pinpoint exactly whos at fault.