Something has happened and I now cannot update pages in Letterman and Content sections
on any of my database sites running 4.5.2.

If I try to make either a new page or edit an existing page, when I hit save, I just get an
HTTP 406 Not Acceptable page stating "The resource cannot be displayed" ?

I have not made any changes to any of the sites, but suddenly they are all doing this.

I do know something has happened to my PC since putting in an external HD for back up.
Many passwords seem to be removed as were some general settings, but how could this
effect an online database? Coincidence or unrelated?

Either way, I cannot update database pages and that is a MAJOR problem.
Any ideas anyone?

Thanks in advance!