Can't Update Contrib Modules via Admin UI
No guarantee it will help, but I think it's worth trying (inspired by some of the suggestions in this comment in issue nr 1022558):


Increase the php memory limits by editing the following lines in the php.ini file as:


max_execution_time = 30 --> 60 ;
memory_limit = 32 --> 128, or even 256M ;

Add the following lines to the end of .htaccess file:


php_value auto_append_file none
php_value memory_limit 128M