If your server can handle it, and you can access your php.ini file, you can increase the amount of memory allocated to PHP. It looks like you are using the H-Sphere control panel, that I am not familiar with.
You need to find a line in the php.ini configuration file that reads something like: php_value memory_limit = "256M"
and raise the memory limit to something like 320M and then restart PHP (usually by restarting your Apache Web Server)
