I'm sure the CC lot will fix this as soon as possible. But anyway, If you need someone's help in the meantime, don't let anyone who has upgraded, near your file!

There is something amis with your sdv3,5 I have opened all of my past projects done in sd v2.5, rsd even RFF and no issues over the images files in the resources (including social one( but there a quite a few small things going on), the biggest of which is the adding of files to the header/footer using that "select" button.
If they don't get back to me shortly (Bob has got a video showing the issues) I am going to have to uninstall & revert back to SDv3
NEW TO "COFFEECUP SITE DESIGNER" FOUNDATION 6 FRAMEWORK?
STUCK ON SOMETHING?
LEARNING & UNDERSTANDING "THE HOW TO"? THE WHY'S & THE WHEREFORE'S?
WITH WAYAN'S STEP BY STEP TUTORIALS
A simple quick way to contact me
https://mawarputih.coffeecup.com/forms/contact-wayan/