Returning file attachments from actions that accept parameter(s) does not work. Returning file attachments from actions that take no parameters works as expected, the user being prompted to open or save the attachment i.e. a Word doc.
When an action that returns a FileAttachment and takes a parameter (e.g. string, enum) is selected, the UI initially displays the old style embedded dialog. After a small delay the screen then jumps to the application home page where, after another small delay,
it displays the expected popup dialog.
Once this is ok'd, a blank screen with what looks like the action signature with the required parameters populated is displayed.
Inspecting using firebug returns the following error when attempting to return a fileattachment
Error message: TypeError: response.match is not a function
Line Number: 466