Support

January 30, 2016 at 3:51 pm

Hi Stephanie,

It turns out the difference between your staging sites and the live site is WPEngine runs caching on the live server, which will cause the errors you’re seeing when running EE4. To fix, you can need to contact WPEngine support and ask them to disable caching for all pages that serve Event content and process the registration steps. There’s more information in this guide:

https://eventespresso.com/wiki/setup-wpengine-hosting-event-espresso/

February 1, 2016 at 3:15 am

Thanks that is interesting. Now, one of our installs works just fine – and the caching setup is identical between all the installs on WP Engine. Does that not point to another issue than caching – one that is install specific?

Which install? Staging or live?

I ran into many data errors on migration and when finished the site had about 10 messages saying “database tables wp_esp_answer exists when it shouldn’t..” and to add a define to the WP config to drop these tables and retry. Despite the errors this site functioned as expected.

This usually means that the database has been altered, this may have been from restoring a previous backup or installing different versions of EE4.

Basically EE4 checks which tables are already present within the database and compares that to what it is expecting from either the current release or the version that your site reports that it previously had installed. However if you are getting a notice for EVERY Event Espresso table then this is likely a false positive caused when the EE tables are within the database AND the wp_options value that stores the last installed version has been removed (meaning EE can see all of these tables but acroding to your site none should be there)

Then I tried the upgrade AGAIN on our live site, same errors, same issue with the events adding to cart but not displaying. I even briefly enabled the default WP theme and the empty cart issue was still present.

The events being added to the cart and then not displaying is due to to the caching mentioned above.

Once you run through the link above for setting up WPEngine that should stop happening.

Also, we have been running EE3 for about a year on WP Engine without these no-caching rules. It is only after upgrading to EE4.

EE4 works differently than EE3 but caching can still causes problems with EE3, its just that with EE4 it is more obvious with the checkout page.

One more thing – does this related to the errors I am getting upon upgrading or the cart being empty or both?

The ‘Nothing in your event queue’ issue is likely caching and should NOT effect migrations.

The ‘database tables wp_esp_answer exists when it shouldn’t..’ warnings are should not be causing the problems above but are informing you of a possible issue. I’ll check in with the developers on this.

Have you previously activated EE4 on the site and then decided to continue to use EE3?