Error on connection - assertion fails

using freshly downloaded 4.28 on Windows 2008 R2 Server

When trying to connect via scp, I get:

Assertion failed: s->gsslib, file putty\ssh.c, line 7970

Am using SSPI for auth

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.

martin wrote:

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.

Email requesting debug version sent

Thanks for your great support, as always