I recently had a problem connecting, myself. I messed with it a couple of hours before resolving the problem.

I started Internet Explorer, and opened the Security settings. Under 'Trusted Sites' I added *.google.com, and unchecked the 'https' requirement.

Going then to the Warehouse, the status bar icon in the bottom right corner showed that the change was accepted, and the Warehouse was included as a Trusted Site.

Now that it's a trusted site, it's allowed to open browser windows with javascript - something I have set as disallowed for non-trusted sites.

While this worked, I still don't know what caused the problem. Like you, I had not had previous problems. Only this week did odd behavior start. Anyway, it works fine now.

Perhaps this is just a unique problem caused by my security settings, but it does go to show that problem-triggers aren't necessarily restricted to SketchUp internally.

Regards, Taff