Changes to page type not showing on child pages / error on setup on child pages

Permalink
I have created a page type that i have used for a product detail page. I added a new block to that particular page type, and then selected "set up on child pages". When I do this I get the following

"fatal error allowed memory size 9431840 bytes exhausted(tried to allocate 71 bytes) in home/apop/apoprecords.com/updates/concrete5.4.2.1/concrete/collection-types.php
on line 273"

the allocated bytes as well as the dir varies, but the error type is the same.