Can't flush cache from dashboard or CLI

[ken-cdit]

I am using Object Cache Pro included with Pantheon plan. Dashboard works, caching is working, license ok, drop-in ok.

Flushing cache with the dashboard button or with wp cache flush results in:

Error: The object cache could not be flushed.

[tillkruss]

We suggest asking the Pantheon team, they are closely familiar with the Object Cache Pro setup on their infrastructure.

My suggestion would be to enable logging and take a closer look at what's causing the error.

[ken-cdit]

When we came in this morning, the dashboard says drop-in invalid and nothing else is working.

I think we are just going to remove this plugin.

[tillkruss]

"drop-in invalid" usually mean you're using the wrong wp-content/object-cache.php drop-in, maybe from another object caching plugin like LSCache, or W3 Total Cache?