I updated a clients site to 2.2.0 last week, it all went OK and the site was running fine until today when I try to edit or add a channel field, it throws PHP errors (screenshot attached).
It still lets me work on the site but if I add anymore fields it just increases the errors. The errors only show on the channel field edit page. When I view the rendered page it hasn’t included any of the data, just the EE channel field tags.
ExpressionEngine v2.2.2 - Build: date 20110801
Add-Ons: Structure, User, Freeform, Matrix, Wygwam, NDG Flexible Admin, SEO Lite
Any ideas?