If you are using LiveSync does this error show in "Log" pane in Graphite - the left-most button at the bottom right part of the window?
In case you are using "Sync on Demand" (three finger sync in iOS, menu button sync in Android), could you answer us some questions so that we can diagnose the problem.
Do you see some specific error on the screen of your device when you try to sync changes?
Judging from what you have written, I assume that it was working before. Is this the case?
Do you remember if anything was changed on the device before it stopped working?
What is your device connectivity - is it connected to a WiFi and does it have access to http://www.icenium.com?
Answering all these questions will help us understand better your case so that we can assist you.
You could try removing and deploying the your application again. This might fix any temporary glitches which could have happened.
Evgeni "Zammy" Petrov
the Telerik team
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