List Feed Button is pressed resutl:error

[KAXER]

Hello, Right now the App is running, but it's not possible to get a good response, when I press the "List Feed" Button appear this message:
com.xively.android.service.exception.RequestUnsuccessfulException, Cause:java.io.FileNotFoundException[https://api.xively.com.v2.feeds]

PIC:

[x22819]

I also have the same issue , Do you solve it ?