Can't access plugins

I’ve just installed a new plugin “Google Analyticator” and since doing this, I keep getting this error message every time I try to access my plugins Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 4864 bytes) in /hermes/bosweb/web167/b1676/ipg.beefelle/beefelle/wp-content/plugins/s2member/includes/classes/user-securities.inc.php(68) : eval()’d code on line 1

Would someone be able to explain to me what this means or how to fix it? Thanks!