FTP – File Explorer Gives ‘Details 200 Type Set to A 227 Entering Passive Mode’

If you check the official specification of the File Transfer Protocol, you'll find that:

FTP can be run in active mode or passive mode, which control how the second connection is opened. In active mode the client sends the server the IP address port number that the client will use for the data connection, and the server opens the connection. Passive mode was devised for use where the client is behind a firewall and unable to accept incoming TCP connections. The server sends the client an IP address and port number and the client opens the connection to the server. Both modes were updated in September 1998 to add support for IPv6 and made some other changes to passive mode, making it extended passive mode.

So, my first thought is that there's something wrong with your folder permissions. Double check them.

I had this same problem. IIS FTP 7.5 is configured by default to allow only ACTIVE FTP not Passive I believe - at least in two default installs I have done. Perhaps your script is getting hung up on this. The IIS website http://learn.iis.net/page.aspx/309/configuring-ftp-firewall-settings/ helped me immensely--though my problem was with a regular FTP client (filezilla) not PERL it should apply in this case. Look at especially Step 3: Configure Windows Firewall Settings