Yes tried, many of them, tried my own widgets by the WEB IDE , but also tried to add by the app loader. Also some apps like clocks are preventing the watch from booting.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Have you tried a different Widget? Maybe the one you try is buggy.