Started using Fusion 15 on MSN 7 OS.

Created website with no real issues everything went well but that was yesterday. Fortunately I put the website up on the WWW same day.

Today however totally different story. I attempted to add a couple of lines to an embedded spreadsheet by first inserting a new row. Have since found out that this one action when I go to preview generates this error message -

**** Damaged Objects have been found on the page and have been deleted ****

So attempting to only insert a new row into the spreadsheet crashes the programme AND of course deletes the spreadsheet entirely.

What is going on ????