conformance test

While running confirmation test
/*****Test Report****/
Receiver Ready failed.
Test #1 failed.
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

/***Test Log***/
Starting to execute test for PC.
Starting HDLC tests #1.
Receiver Ready failed.Failed.
<a href="https://www.gurux.fi/gurux.dlms.ctt.tests#hdlc1">Test #1 failed.</a>Starting HDLC tests #2.
Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: indexSystem.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
at Gurux.DLMS.Objects.GXDLMSObjectCollection.get_Item(Int32 index)
at GXDLMSDirector.GXHDLCConformanceTests.T_HDLC_FRAME_P2(GXConformanceTest test, GXConformanceSettings settings, GXDLMSDevice dev, GXOutput output, Int32 tryCount)
at GXDLMSDirector.GXHDLCConformanceTests.HdlcTests(GXConformanceTest test, GXConformanceSettings settings, GXDLMSDevice dev, GXOutput output, Int32 tryCount)
at GXDLMSDirector.GXConformanceTests.ReadXmlMeter(Object data)