sdr# crashing

[dlxrr]

hello,
when im trying to choose virtual com port in the plugin settings, sdr# is crashing with this message:
This operation returned because the timeout period expired. : 'COM1'
at .SerialStream.EndRead (IL offset: 0xa1)
at .SerialStream.Read (IL offset: 0x24)
at .SerialPort.InternalRead (IL offset: 0x0)
at .SerialPort.ReadTo (IL offset: 0xe2)
at .SerialPort.ReadLine (IL offset: 0x0)
at SDRSharp.XDR.dll.SerialCommands.ComThreadEngine (IL offset: 0xf)
at .StartHelper.Callback (IL offset: 0x0)
at .ExecutionContext.RunInternal (IL offset: 0x80)
at .ExceptionDispatchInfo.Throw (IL offset: 0x11)
at .ExecutionContext.RunInternal (IL offset: 0x80)
at .Thread.StartCallback (IL offset: 0xe)