I've spent Friday after and part of Saturday trying to get this to work like older 5.5 version. Can't continue debugging this. As of now 5.7 is crap for viewing pdfs.
I noticed someone said FileZilla works as an alternative. I'll have to use that until winscp is improved.
Thing is I've been using winscp for years - have never had a problem I couldn't get resolved - until now. Its affecting my productivity.