ERROR: Unable to write file : DISK_ERR, leads to Out of Memory errors.

Yeah, I've only seen it when I'm doing fs writes. It's as if the SD card failure breaks the timer somehow...

Seems to work fine just sitting there reading dht's.

Edit: Just got another failure, this one much faster - and I got the whole trace this time because it froze entirely at the end

http://drazzy.com/espruino/v58devfailure2.txt

(note that I'd created a demo array to show my friend the WS2812's, that's why there's a graphics object in the trace)