Emoncms low write

Hi,

I have a raspberry with a emoncms with low write image (i have used a ready image).

I have a problem, when in a "node input" on emoncms i put a "allow positive" or "allow negative" the raspberry don't receive nothing from the node. It is impossibile to come back, I need to reinstall the system. Before to put the function is all perfect.

I need the function "allow positive" and "allow negative".

Thanks