Using X without a problem for years on a number of sites. Started getting symptoms after setting up W3 cache and Cloudflare. When we first got error message we followed all advice on the old forum … deinstal plugins … purge cache …etc. Contacted support when this didn’t work. Support said the problem was the minify seting on W3 … it should be off. Things worked again for 3 days. Then it stopped being possible to delete items, columns, rows …etc. The delete confirmation buttons (grey and red) showed up but it was not possible to click them. Then the “A conflict…” error message came back. Support said everything works fine on their end. Am running windows 10 pro and tried emptying the caches in all browsers + restarting router. No luck … error persists on Edge, Chrome, Opera, and Firefox. Am at my wits end.
PS it IS possible to preview the pages in cornerstone … the error occurs after pressing ‘edit’.
PSS Themco support asked me to post this thread so that other support could see it too.