When I enable "Cache pages for anonymous users," the first page load is fine, but when it should load up the cached version on the 2nd visit to a page, it results in a 500 Internal Server Error.
I get this response whether or not I also compress the cache.
CSS & JS files aggregate with no problem.
I tried disabling ALL the Performance settings, deleting the aggregated CSS/JS files and then renabling everything. I also tried rebuilding node access permissions.
I do not have any errors in my Drupal log or in my PHP error log.