Problem:

I ran a local site on WordPress Studio (SQLite) and hit a fatal error during Toolset’s upgrade when it tried to ALTER TABLE wp_toolset_relationships to add the autodelete_intermediary column (duplicate column error), preventing access to the admin side.

Solution:

This environment isn’t supported by Toolset; the fix was to use a standard WordPress stack with MySQL/MariaDB (e.g., MAMP/WAMP/Local WP/XAMPP) or migrate to a regular host, after which the issue no longer occurred.

Problem:

I couldn’t update my site even though my Toolset license was active; it showed the error “Unable to register: Site key not matching.”

Solution:

Unregistered and re-registered Toolset via WordPress Dashboard → Plugins → Add New → Commercial tab → Unregister Toolset → Register Toolset → Get a key for this site → paste the new key and confirm. This resolved the license mismatch error.

Relevant Documentation:

https://toolset.com/faq/how-to-install-and-register-toolset/

Problem:

Blog preview images appeared stretched on the category archive page, while other images displayed correctly.

Solution:

After investigation, it was confirmed that the affected page was not created with Toolset, since deactivating Toolset Types and Blocks did not affect it and no Toolset archives or templates were assigned. Therefore, the issue was unrelated to Toolset.