Web viewers not working

[Cable]

Apparently 3 days ago all my web viewers stopped working. They won't even load so much as Google now. Regular browser windows work just fine but not web viewers in FileMaker. They get about 40% loaded and then stall. It is happening whether the file is hosted or not, and I've tried various files including creating a new one.

I'm using FileMaker 15.

Anybody ever see this behavior or have any ideas?

 

EDITED TO ADD: I have verified that this is only happening with FileMaker 15. FileMaker 14 displays all web viewers just fine.

Edited August 26, 2016 by Cable

[Cable]

And it suddenly started working again.