We are running Win FTP on our ftp server but are having a peculiar issue. Its "home" directory goes to a mapped drive on our LAN. I've set up a user with the appropriate permissions to the "home" directory and it works fine for a few days but then whenever someone tries to log in and upload a file it won't allow them to. The log files always show that the user logs in fine but gets a "550 can't access file" error. The only way to fix this is to shut down the ftp server program then re-launch it or reinstall the app. I thought maybe another ftp program would solve the issue but it doesn't. I'm sure it's a permissions problem but I've set them to wide open everywhere I could to try and track down the problem without any success. I have also disabled my antivirus firewall as well. Also, the ftp app we're using (Win FTP) in this configuration ran flawlessly for over a year but recently just started having this issue.