Problem saving a page

I’m completely new to this, but I’ve been creating a simple site using Enfold without any problems until today. After updating an icon list, I save it and then go to update the page. When clicking the update, the WP wheel rotates as normal but rather than saving and refereshing the page, the WP user interface disapears and I end up with a page displaying nothing other that -1 at the top left corner. Using the back button, if I return to the WP page and look at the content of the icon list, it has saved what I’ve done, but the page will seemily not update. If I do a Preview Changes, the page is diplayed but without the updates I have made to the icon list do not appear, it is still populated with the default content.

All other pages have been updated as I’be been adding to the site without problems, include those with other icon lists. I just dont understand what – if anything – is different here and what, if anything, the -1 is supposed to indiciate.

Any help will be much appreciated.