FileZilla SSL Gets Error: 425 Can't open data connection.

I have a FileZilla 0.9.24 FTP Server sitting behind a Cisco PIX 506 Firewall running 6.3(5) and configure with PAT for Network Address Translation.  When connecting in passive mode to the server without SSL/TSL Explicit turned on, I can connect and everything works great.  If I turn on SSL/TSL Explicit on the server and the client (using FileZilla Client) I get the following:

WITHOUT SSL/TSL (WORKS)
Status:      Connecting to PUBLIC IP ADDRESS:21...
Status:      Connection established, waiting for welcome message...
Response:      220 You are connec
Command:      USER GUEST
Response:      331 Password required for guest
Command:      PASS *****
Response:      230 Logged on
Command:      SYST
Response:      215 UNIX emulated by FileZilla
Command:      FEAT
Response:      211-Features:
Response:       MDTM
Response:       REST STREAM
Response:       SIZE
Response:       MLST type*;size*;modify*;
Response:       MLSD
Response:       AUTH SSL
Response:       AUTH TLS
Response:       UTF8
Response:       CLNT
Response:       MFMT
Response:      211 End
Status:      Connected
Status:      Retrieving directory listing...
Command:      PWD
Response:      257 "/" is current directory.
Command:      TYPE I
Response:      200 Type set to I
Command:      PASV
Response:      227 Entering Passive Mode (EXTERNAL IP ADDRESS,242,92)
Command:      LIST
Response:      150 Connection accepted
Response:      226 Transfer OK
Status:      Directory listing successful
Status:      Disconnected from server

WITH SSL/TSL (DOESN'T WORK)
Status:      Connecting to EXTERNAL IP ADDRESS:21...
Status:      Connection established, waiting for welcome message...
Response:      220 You are connec
Command:      AUTH TLS
Response:      234 Using authentication type TLS
Status:      Initializing TLS...
Command:      USER GUEST
Status:      Verifying certificate...
Status:      TLS/SSL connection established.
Response:      331 Password required for guest
Command:      PASS *****
Response:      230 Logged on
Command:      SYST
Response:      215 UNIX emulated by FileZilla
Command:      FEAT
Response:      211-Features:
Response:       MDTM
Response:       REST STREAM
Response:       SIZE
Response:       MLST type*;size*;modify*;
Response:       MLSD
Response:       AUTH SSL
Response:       AUTH TLS
Response:       UTF8
Response:       CLNT
Response:       MFMT
Response:      211 End
Command:      PBSZ 0
Response:      200 PBSZ=0
Command:      PROT P
Response:      200 Protection level set to P
Status:      Connected
Status:      Retrieving directory listing...
Command:      PWD
Response:      257 "/" is current directory.
Command:      TYPE I
Response:      200 Type set to I
Command:      PASV
Response:      227 Entering Passive Mode (EXTERNAL IP ADDRESS,182)
Command:      LIST
Response:      425 Can't open data connection.
Error:      Failed to retrieve directory listing

The Cisco PIX has translation lists that are port 21 redirect to port 21 and the same for port 20
I have access rules for ports 21 and 20 pointing to the interior server.

Also I'm running behind a Linksys Wireless WRT54G, but am getting the same results running plugged directly into my Cable Modem.

Everything works without SSL/TSL; but once I turn it on I get this error.  Thank you for your help