Putty 0.71 session windows close immediatly with no text showed

Hi,

Since WinSCP 5.15.0 (on Win 10 1809, french), when I click on session lauch, I see a black windows that closes immediatly.
Reinstalling Putty 0.70 re-ennable working putty sessions.

My configuration is set to :
%PROGRAMFILES%\PuTTY\putty.exe -t -m "%TEMP%\putty.txt" !`cmd.exe /c echo cd '!/' ; /bin/bash -login > "%TEMP%\putty.txt"`
(it opens the ciurrent directory in Putty SSH session)

But it doesn't work with
%PROGRAMFILES%\PuTTY\putty.exe

Regards
_________________
Web site creation with SPIP — https://www.pyrat.net/

What is "session lau[n]ch"? What exactly do your click?

Try holding down Ctrl+Shift while clicking. WinSCP copies PuTTY command it would execute to a clipboard, instead of executing it. Post the command here. Also try to execute the command from command-line.

Thx for your attention.

The command is (password remplaced by XXXXXXXX)
"C:\Program Files\PuTTY\putty.exe" -load "WinSCP temporary session" -pw XXXXXXXX -t -m "C:\Users\Jacques Pyrat\AppData\Local\Temp\putty.txt"

And the temp file contains :
cd '/var/www/_pyrat/veille.pyrat.net/www/' ; /bin/bash -login

Tested from command line with putty 0.7.0 : OK
With Putty 0.7.1 : fail with no message

With -SESSIONLOG I have this error dialog :
---------------------------
PuTTY Error
---------------------------
Unable to open connection to
WinSCPtemporarysession
Host not found
---------------------------
OK
---------------------------
_________________
Web site creation with SPIP — https://www.pyrat.net/

Sorry, the error message was here because I didn't put the name of the log file.

The there is no error, and no log file created with 0.7.1 (the is one with 07.0)
_________________
Web site creation with SPIP — https://www.pyrat.net/

How did you install PuTTY? What exact package did you use?
Does this registry key exist?
HKCU\Software\SimonTatham\PuTTY\Sessions\WinSCP%20temporary%20session
What does the key contain?
What sessions do you see on the PuTTY login dialog, when you start PuTTY 0.71? Do you see "WinSCP temporary session" there?