For example, I upload a file like this:
C:\Utils\winscp410.exe MyName:MyPassword@myserver.com:22/home/bla/ /console /upload C:\Temp\MyFile.zip /defaults
But this opens a separate console window, instead of just outputting to my current console (from where I called WinSCP).
If I leave the /console option away, I get other popups - which isn't actually a problem, until an error occurs (e.g. file not found). Then I get an error popup, instead of WinSCP just closing wiht an error code.