A user ( @adunford ) tried to upload a WDL via the UI. He entered a synopsis text/entry that was apparently longer than 80 characters. The UI did not present an error. He'd click the upload button, then the "spinner" would appear then disappear immediately after. To help discover the issue, he approached me and I suggested we inspect the network traffic using FireFox's UI network inspector (under its web-developer menu). By inspection we found a message saying something to the effect of "synopsis cannot be longer than 80 characters." Upon finding this message there, Andrew took action by shortening the synopsis and after that the upload was successful!
The system did not give him an error and so we had to use the debug/developer facilities. A proper error message would be appreciated here.