No JSON object could be decoded

hi i have been using the plugin for months no problem
i have another indigo set up at my office just installed the plugin with a new developer account and a new api key but i get this response.
any help would nice thx

i have tried may zip codes and autoip

Aug 21, 2015, 8:28:26 AM
Reloading plugin "WUnderground 0.9.18"
Stopping plugin "WUnderground 0.9.18" (pid 43810)
Stopped plugin "WUnderground 0.9.18"
Starting plugin "WUnderground 0.9.18" (pid 47695)
Started plugin "WUnderground 0.9.18"
WUnderground Error Unable to reach Weather Underground. Reason: Exception - No JSON object could be decoded
WUnderground Error Sleeping until next scheduled poll.

Sorry to hear that you're having trouble!

Please turn on debugging within the plugin and send the results to me in a private message.

PM Sent