This message appears when WooCommerce plugin changes it’s core files, usually this happens when WooCommerce publishes a major update or any minor update after the major update. (Example. 3.0.0, 3.0.1 or 3.1)
We recommend clients to always read the changelog of your theme if the latest update of the theme supports that version of WooCommerce as noted on the plugin itself throughout the theme.
If you see that the latest version of the theme doesn’t support the released WooCommerce version then please wait until we release a theme update that will support the latest version of WooCommerce.
If you have accidentally have updated the plugin then don’t worry, we probably are working on the update and when the theme update is ready you will be notified by email, if you have already enabled “Get notified by email if this item is updated” from your Themeforest download tab.
- Kalium 2.0.7 is released and it includes WooCommerce 3.0.5 support, read release notes »
- Aurum 2.9.8 is released too and it includes WooCommerce 3.0.5 support, read release notes »
- Oxygen 4.4 is released too and it includes WooCommerce 3.0.5 support, read release notes »
UPDATE for Kalium theme:
If you have accidentally updated your WooCommerce to version 3.0.7 on Kalium then you will see one outdated file, to fix that problem please just download this file grouped.php and replace it with the same old file that you can find on this path: wp-content/themes/kalium/woocommerce/single-product/add-to-cart