Freezes when publishing to Sailwave website results folder

We’ve got a new Dell Laptop with Windows 10 on it. Having problems publishing when using “The Sailwave website results folder” as the destination.
It gives the message saying “Connection to to write … established. Click OK to continue”
But when I click OK Sailwave just freezes with the spinner and then I try to close Sailwave it gives a mnessage “Sailwave Scoring Software is not responding” and I have kill the process.
The filename is valid because it publishes ok from my Ubuntu machine from the same blw file.
Any suggestions?

Hi Steve,

You can try setting the Global options use passive transfers

Otherwise its probably a Firewall setting