I'm having a weird problem. If I put a post grid inside of a post, it seems to crash the website. Pages seem to be fine though. When I click update after putting the shortcode in, it tells me "Updating Failed" after it tries for a little bit. And then certain pages give me a 503 Service Temporarily Unavailable message. If I disable the plugin and re-enable it, or I delete the post grid I just created, then it works fine.