Well, there's nothing more to say than the error message says already.

The WinSCPnet.DLL in that long path was not updated.

We do not know where the path comes from and how to update it. It's your application.

We just did an update and it is failing with this error. Session.DisableVersionCheck = true in my vb.net just gives me a syntax error. Version is 5.7.5
Last version was 5.5.6
Did we not get the latest WinSCPNet.dll? Windows 7, FTP

The version of C:\Program Files (x86)\WinSCP\winscp.exe (5.7.5.0) does not match version of this assembly C:\Users\administrator.EVANSDIST\AppData\Local\Apps\2.0\EEBN815K.BD5\5O4N2JOP.GCK\jbme..tion_89df93d300098eab_0001.0000_23ddad81dd45917d\WinSCPnet.DLL (5.5.6.0). You can disable this check using Session.DisableVersionCheck (not recommended).

Above job runs every 10 minutes to FTP files.

Log file:

<?xml version="1.0" encoding="UTF-8"?>
<session xmlns="https://winscp.net/schema/session/1.0" name="[email protected]" start="2015-10-09T16:44:37.312Z">
</session>