If you need that much memory set you would need to buy paid or a VPS.
What you could try is to try to lower the value where the scripts tries to set that, and if you are lucky the script runs anyway (this may or my not work)
Corey upped the limit on the free servers to 64M months ago.
During the move of data centers, some servers were set with a 32M default but they have not adjusted php.ini to standardize the settings.