a remedy
A remedy to this problem:
Open regedit.
Find HCU/Software/Martin Prikyl
Delete the password keys for your stored sessions
Delete the two keys in configuration/security
Then your WinSCP is open Again and you may re-activate the use of master password.
Open regedit.
Find HCU/Software/Martin Prikyl
Delete the password keys for your stored sessions
Delete the two keys in configuration/security
Then your WinSCP is open Again and you may re-activate the use of master password.