As I develop my website and store various versions, there comes a point where X7 will not open the latest version of the file.  It just hangs (with the cursor busy indicator) and does nothing more - even if you leave it for over an hour.  No error message.  The only way out is to restart the program.  The file that would not load in X7 will generally open in X5 with the navigation bars blanked out.  As an example, in the attached files vn1.3 will load in X7 but vn1.4 will not.  vn1.4 will load in X5