I just got off the phone with Support and they did a remote session with me. They recommended that I post the full FTP text to this forum since they were not able to help with my problem. My firewall is off. Here is the text:
Status: Resolving address of ftp.bullhorn.com
Status: Connecting to 188.8.131.52:990...
Status: Connection established, initializing TLS...
Status: Verifying certificate...
Status: TLS/SSL connection established, waiting for welcome message...
Response: 220 Welcome to ftp.bullhorn.com. For all questions, please contact support
Command: USER Sep_SaltHillGroup_1273_BULLHORN938
Response: 331 Password required for sep_salthillgroup_1273_bullhorn938
Command: PASS **********************
Response: 230 Logged on
Response: 215 UNIX emulated by FileZilla
Response: REST STREAM
Response: MLST type*;size*;modify*;
Response: AUTH SSL
Response: AUTH TLS
Response: 211 End
Command: PBSZ 0
Response: 200 PBSZ=0
Command: PROT P
Response: 200 Protection level set to P
Status: Retrieving directory listing...
Response: 257 "/" is current directory.
Command: TYPE I
Response: 200 Type set to I
Response: 227 Entering Passive Mode (72,85,155,71,207,97)
Response: 425 Can't open data connection for transfer of "/"
Error: Failed to retrieve directory listing