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DCA1000EVM: mmWaveStudio and LUA script exception

Part Number: DCA1000EVM

Hi mmWave team,

I can't run DataCaptureDemo_xWR.lua script in mmWaveStudio. Please see the error:

[11:51:01]
[11:51:01] &&&&&&&&&&&&&&&&&&&&
[11:51:01] ***Script FAILED!***
[11:51:01] &&&&&&&&&&&&&&&&&&&&
[11:51:01] Exception message is:
[11:51:01] [RadarAPI]: Error: ReadRegister: Object reference not set to an instance of an object.
[11:51:01] Trace:
[11:51:01] at AR1xController.SerialPortWrapper.SendAndRead(String command, String& response, Int32 timeout)
[11:51:01] at AR1xController.SerialPortWrapper.Read(UInt32 addr, UInt32& val)
[11:51:01] at AR1xController.SerialPortWrapper.Read(UInt32 addr, UInt32 start_bit, UInt32 end_bit)
[11:51:01] at AR1xController.AR1xxxWrapper.ReadRegister(Int32 type, UInt32 address, Int32 start_bit, Int32 end_bit, UInt32& value)