Are you able to reproduce the problem with the latest release?
Version 4.0.9
Protocol: FTP
Nothing updated. just tring to connect to a site we always do. No upgrade has occured. Just starting to happen. Using the GUI, it connects just fine, but in batch mode, it fails.
C:\Program Files\WinSCP>WinSCP.com /console /script=ExcelCDRsFTP.txt
batch on
confirm off
Connecting to pxuxft01.excel.com ...
Connected with pxuxft01.excel.com. Waiting for welcome message...
Connected
Starting the session...
Reading remote directory...
Session started.
Active session: [1] pioneer@pxuxft01.excel.com
/ResponseFromExcel/CDRS
transfer binary
Invalid access to memory
Session 'pioneer@pxuxft01.excel.com' closed.
No session.