Our apps (Universalis and the free Catholic Calendar) have been working well for over a year on both Kindle Fire and Kindle Fire HD. Today, suddenly, users have started reporting that all our WebViews are displaying a blank screen instead of text. The one user who has been able to look up the version details reports the following: Kindle Fire HD (7") System Version 7.4.7 user 4730120 Has anybody else come across new problems with this version? Was it distributed to devices recently? I note from the Amazon web site that the latest version of the software for the Kindle Fire HD (7") is 7.4.6, which suggests that 7.4.7 has only just been sent out to these devices.