email not loading

[Anonymous]

I have created an email template which Previews correctly and whiich reports no errors when Validating HTML.  A test Send Sample of the template works fine. However, when I create a new Email based on this template, I can Preview it but can't Edit it - the Loading icon just runs forever!    Does anyone here have any clues as to what might cause this please ???

[Anonymous]

The fact the email renders normally, sends sample and does not open in Design Studio is likely to be caused by missing/conflicting/wrong HTML tags in the source.

I would suggest opening, retrieving the source and validating at http://validator.w3.org/
That would give a quick initial diagnostic.

What is the email name in Marketo?