Fatal Error

I was having problems with a fatal error in word press so I reloaded the theme from my server.

As I was adding plugins I got another error. I do not want to continue with building my site until this plug in is corrected. I REALLY need your help. Please tell me what file to correct on the server and exactly what I should be adding to that file. I obviously have to change the memory, however, I am unsure as to where to find the file and what to add to that file. Thanks much!!

Here is the error I am receiving again.

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 30720 bytes) in /data/16/2/126/107/2778270/user/3054910/htdocs/wordpress1/wp-includes/class-simplepie.php on line 12793