Sometimes on firefox browser (only checked there) we get error: "An error has occured: templateNode is null". Error almost never occurs during development. It usually occurs during normal activity using production server.
We guess this is cache problem, but .timestamp file is responsible for that. One time even clearing cache didn't help, after computer restart everything went back to normal heh.
It's hard to tell when it happens, but last time it happened after 1-2 days of constant using new version of app.
Do you have any suspicions?
For best results, use the Firefox browser..