Upload files works in FileZilla not WinSCP

# Load WinSCP .NET assembly
Add-Type -Path "C:\Program Files (x86)\WinSCP\WinSCPnet.dll";
 
#pass the new file to secure FTP
# Setup session options
$sessionOptions = New-Object WinSCP.SessionOptions -Property @{
    Protocol = [WinSCP.Protocol]::Sftp
    HostName = "HOSTNAME"
    UserName = "USERNAME" 
    Password = 'PASSWORD' 
    SshHostKeyFingerprint = "ssh-dss 1024 EDITED FOR PRIVACY"
    Timeout = 600
}
 
$session = New-Object WinSCP.Session;
try
{
    #$tim = Get-Date -Format HH:mm:ss
    #Write-Host "Connecting ...  " $tim
    $session.SessionLogPath = 'LOGPATH\winscp.log';
 
    ## Connect
    $session.Open($sessionOptions);
    
    $transferOptions = New-Object WinSCP.TransferOptions
    $transferOptions.ResumeSupport.State = [WinSCP.TransferResumeSupportState]::Off
    $transferOptions.FilePermissions = $Null # This is default
    $transferOptions.PreserveTimestamp = $False
    $transferOptions.TransferMode = [WinSCP.TransferMode]::Binary
    $transferOptions.FileMask = '*.*';
    
    ## copy file to SFTP
    $transferResult = $session.PutFiles($file270,$remotePath,$False,$transferOptions);
 
    $transferResult.Check();
    
    ##close connection
    $Session.Close()
}
finally
{
    # Disconnect, clean up
    $session.Dispose();
}