Exception while started

Hello! Sorry for stupid question, but:
When I starting WinForm project (AdapterLab.exe) i`ve got exception in MachineTools->start_click()->mWave.StartRecording();

 An unhandled exception of type 'NAudio.MmException' occurred in NAudio.dll

Additional information: BadDeviceId calling waveInOpen

I seems to me I made something wrong? ...but I dont now what