[Gemma]

Try editing your php.ini file settings to something like

max_execution_time = 30 ; Maximum execution time of each script, in seconds
max_input_time = 60 ; Maximum amount of time each script may spend parsing request data
memory_limit = 128M ; Maximum amount of memory a script may consume (8MB)

Or, if you don't have access to your php.ini file, temporarily up your limits by editing your includes/config.php file and add this lines right under the <?php line:

ini_set('memory_limit', 128 * 1024 * 1024);

You may need to change the 128 to 256 or 512

See if that helps