Yes, thanks, so there we are.
On June 14th Microsoft released buggy software which broke the printing of framed content in IE 11.
We very quickly released hot fixes to get our licensees and their customers out of trouble.
Microsoft released their final fix three days ago.
https://support.microsoft.com/en-us/help/4022716/windows-10-update-kb4022716
Thus this is no longer an issue.
GOOD!! Thanks everyone for working with us on this, and apologies for my occasional bad temper.