Hey Elise,
Sorry for the trouble you’ve run into with these plugins on your site – there is often, unfortunately, not much we can do to address problems if they arise from a conflict with another plugin.
What might be useful, though, is to try and learn more about what, exactly, is causing the conflict itself. To do this, I’d recommend seeing if any errors pop up on your site if you head to your site’s wp-config.php file and change this line of code:
define('WP_DEBUG', false);
to this:
define('WP_DEBUG', true);
That will display PHP errors on your site if any exist, which might reveal something about your conflicts in more detail – make this change and then do similar “troubleshooting”/testing steps like you mention in your original reply (i.e. paging back and forth through events pages, activating and deactivating the Access plugin, etc.)
As you go about your troubleshooting, if any errors pop up copy and paste them in their entirety into Gists at http://gist.github.com, and share links to those Gists.
Thanks Elise!