Weather Display closing every few minutes

I am using Weather Display 10.37s build 61on windows 10. In the last couple of days after starting the program it stops working and closes.The programerrorlog.txt contains this over and over

151: HTTP protocol error. 422 Unprocessable Entity.
Above error or program log occured at :18 28 32 12/02/2017
151: HTTP protocol error. 422 Unprocessable Entity.
Above error or program log occured at :18 28 32 12/02/2017
151: HTTP protocol error. 422 Unprocessable Entity.
Above error or program log occured at :18 29 31 12/02/2017
151: HTTP protocol error. 422 Unprocessable Entity.
Above error or program log occured at :18 29 31 12/02/2017

Can anyone suggest where to look or some troubleshooting steps? I am uploading to my web page and to wunderground rapidfire and they seem to work ok.

I just looked further back in the programerrlog.txt and this was the error a few hours ago

151: HTTP protocol error. 500 Internal Server Error.
Above error or program log occured at :10 09 31 12/02/2017

the best thing is to .zip and email me your settings files (see the FAQ on how to do that)

Thanks for the reply, will do.

sent a zip file of wdisplay.ini and wdisplayftp.reg

it looks like the acurite server is down
in WD, in the weather station type setup, unset to send data to acurite my backyard