Hi, I assume you are using an EL041 thermocouple converter. I have a few questions:

1) What kind of temperature sensors are you using?
2) How are you physically connecting the temperature sensors?
3) How many temperature sensors do you have?
4) What are you actually measuring?

Best regards

Hi, is the light on the logger flashing or solid?

That is strange, what version of the software are you using? Also what operating system are you using?

Best regards