snapshot crashes my site whenever i activate it

I am using exclusively your themes and plugins along with gravity forms (per your suggestion) yet when i activate snapshot it crashes my site. i get a white page with an error message: "
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 280942 bytes) in /home/heidipeyser/public_html/wp-content/plugins/wpmudev-updates/includes/class-wpmudev-dashboard-site.php on line 1097"

so I followed your tutorial about adding the php.ini or php5.ini and that helped, however, now whenever snapshot is activated it causes me theme's css (it's an upfront theme using builder) to not load.

The whole point of me being faithful to your product line is to avoid stuff like this.

help please