Why do I get a white screen in a HTML widget once it has loaded?

I have created some HTML which works fine in Safari but as soon as I make it a widget it loads fine with the Default image on screen and then it just goes white with nothing more than a x in the top left corner. Any ideas what I a might be doing wrong. I have an info.plist directing to the html, a Default.png which works as it appears as loading but the page just will not display.
Any ideas very welcome.
THanks

Without seeing exactly what you have, troubleshooting is difficult.
You could try here iBooks Author: About HTML widget creation for more guidance. I became unstuck once when I made some HTML in Dreamweaver, but forgot to set the Doctype as the HTML5 one.
You could also look at this https://github.com/TrevorBurnham/iBooks-HTML-Widget-Boilerplate

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