HELP NEEDED: How to solve this error

I have connected my EGI Geodesic to Mac computer and the computer can measure impedance and read the brain signal. However, when I want to start the experiment, this error is shown:

The following runtime error occurred: An error occurred while attempting to open the device

Device Name:

Error: 0x00005400

Message: Unable to connect socket: 0x00002751'

Line: 2585

Error Number: 10051