WinSCP vanishes

Only seen this since upgading to the latest 4.2.7 release.
The WinSCP login screen appears, with all my previous connection definitions.
I pick one, click on "Login" button.
It connects, the stages of connection appear in the window.
Then once it's connected, that window disappears and nothing else appears!

It's configured for the commander interface and that does not appear.

Can you send me an email, so I can send you back a debug version of WinSCP to track the problem? Please include link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.