PDFs in Firefox

When using the Bootstrap PDF File page in Firefox, the PDF is not displayed. Works fine in Chrome and IE. It looks to be a Firefox issue, rather than a Xerte issue, but I just wondered if anyone had a solution?

Basically, this should work, but it doesn't in Firefox:

Hi Neil,

Assume this is Windows as i've just tried it on a Mac in Firefox and it works as expected...

Is it to do with this setting - support.mozilla.org/en-US/kb/disable-bui...d-use-another-viewer

Regards,

John