Right click download of files from webviewer

[crayfish]

I'd like to be able to view a webpage in webviewer and manually download linked files. If I right click on a file, I get a normal dialog box where I can select "download linked file". However, nothing happens when I select it. No download. No prompt of where to save it.

Is this an issue with my set up, or is it simply not possible to download files manually from webviewer?

Any ideas?