I had WooCommerce-Mailchimp 1.2.1. (and was very happy with it). After backing-up my files, I updated both WP and Woo-Commerce. Nearly right away, the dashboard froze. I logged out and when I logged back-in, all of my posts/products had seemingly disappeared. I received two error messages:
Warning: array_merged() [function.array-merge]: Argument #2 is not an array in /home/…/public_html/test/wp-content/plug-ins/woocommerce-mailchimp/classes/class-ss-wc-integration-mailchimp.php on line 164
Warning: Invalid argument supplied for for each() in /home/…/public_html/test/wp-content/plug-ins/woocommerce-mailchimp/classes/class-ss-wc-integration-mailchimp.php on line 304
So, I deactivated and deleted the Mailchimp plug-in (which was very slow moving because the site became snail-like in speed).
Then I noticed that there was a Mailchimp 1.2.4 plug-in. So I installed that. Which then crashed the site again. I tried to deactivate/delete but for a good 30 minutes was unable; the connection kept timing out. Finally it worked.
I have screenshots with additional error messages (IE: “argument #2 is not an array” and “cannot modify header” re: line 896).
What do you recommend?