I inherited a Drupal 6.28 site using theme Colourise 6.x-2.1. I do PHP dev but am not very familiar with Drupal.
Today without having modified any files and without having made other updates none of the content displayed by Blocks is being rendered.
I checked in /?q=admin/build/block and all of my blocks have same left sidebar, right sidebar, header, and top content data as before. Most are just static html.
I am able to rearrange, cut throttle on and off and changes are preserved in admin but the contents are still not rendered at all.
I cleared cache to no effect.
Problem persists across theme changes so I assume it's not the page.tpl.ph file.
For kicks I edited conditionals around sidebars in Colourize theme page.tpl.php and saw the empty divs for them render.
I was able to add and save a new HTML block in admin and move it to sidebars and header and save location but it never rendered.
What should be my next step to debug this?