Hi Paolo,
I am running my WP site (3.9.2) on a MAMP test server and just updated my GeoDirectory plugin for the second time today. And for the second time the site went completely blank, backend and frontend. I got it back the first time by changing and renaming files and re-uploading plugins etc. Just reinstalling the backup that I had run just before the update did not work.
I have only basic knowledge of (wordpress) programming but was able to find out that what happened to me is called the White Screen of Death.
What happened here and how can I fix it? Is there an easy fix or do I need to spend another 2h recreating the site? Although I used the same files (like style.css and functions.php) as before for some reason WP did not recognize parts of the code or told me that there were errors where there hadn’t been. I had to rewrite code in order to make it look and function the same way. Extremely bizarre.
Thanks for your help.