Created attachment 2369 [details] error-when-editing-values.png Every time you edit a variable value, you get the attached error (error-when-editing-values.png) after you click 'save'. When you dismiss the error, the values update in the page, but it looks like they are not saved to the database.
The patch submitted for bug 7231 also fixes this issue.
Verified on master: 369932178fe9e7aa4a6d0e2ef1e2e539be701d02