WinSCP not starting

WinSCP stopped working all of the sudden. All i get is a very brief view of the commander interface, then it disappears.
I tried uninstall, reinstall, downgrade to previous version, upgrade (currently at version 513038565), copied WinSCP.ini from working PC, reboot etc.
Any help would be greatly appreciated. Maybe a debug version would help?

thanks for your help and kind regards,

Marcelo

I'm sending you an email with a development version of WinSCP to the address you have used to register on this forum.