New Windows 7 Raidar sidebar gadget

Hi, TheGarf
firstly sorry may bad english
i would like use your gadget, but not work
.net 4.0 installed
firewall turn off
i use Readynas duo
tested: Win7 home premium x32, Win 7 enterprise x64, Win 7 ultimate x32 (HUN, ENG language) and same error:

An error occurred in the application you were using Startup URI: C:\Users\xxx\AppData\Local\Microsoft\Windows Sidebar\Gadgets\RaidarGadget.gadget\RaidarGadget.xbap Application Identity: file:///C:/Users/xxx/AppData/Local/Microsoft/Windows%20Sidebar/Gadgets/RaidarGadget.gadget/RaidarGadget.xbap#RaidarGadget.xbap, Version=0.2.0.92, Culture=neutral, PublicKeyToken=6cafc54d27d557dd, processorArchitecture=msil/RaidarGadget.exe, Version=0.2.0.92, Culture=neutral, PublicKeyToken=6cafc54d27d557dd, processorArchitecture=msil, type=win32 System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object. at RaidarGadget.RaidarGadgetPage.SetTemperatureInfo() at RaidarGadget.RaidarGadgetPage.UpdateNasStatus(String result) at RaidarGadget.RaidarGadgetPage.OnDeviceDiscovered(Object sender, MessageEventArgs args) --- End of inner exception stack trace --- at System.RuntimeMethodHandle._InvokeMethodFast .... more line

What is the problem? What can i do?

Thanks
Szerda
Sorry my bad English