Thread:Project:Support desk/Blank page after clicking on 'file list' in special pages/reply (7)

I have the same problem - a blank page when trying to upload an image file. My Wiki is 2 yrs old and this problem has never occurred before. Also, after trying to upload a 3MB .jpeg I am unable to view Special:ListFiles. Adding the error-reporting lines to LocalSettings.php didn't produce an error message on the blank page. However, my error log file contains the following:

PHP Fatal error: Allowed memory size of 52428800 bytes exhausted (tried to allocate 9216 bytes) in /home/xxxxx/public_html/wiki/includes/media/Bitmap.php on line 566

I'm using MediaWiki 1.23.5, PHP 5.3.24

Any advice would be gratefully received.