Having Ekos crash after connecting to the driver generally means the driver itself has crashed. It would be useful to see the logfile but you may need to also enable debugging in Ekos and try again to get more information. Click the Logs button on the Ekos setup page and select Verbose, Output to File, tick Mount under the Ekos section and tick Mount under the driver section. Then click Ok and you will get the maximum log messages. 
Even though it may be gibberish to you the log file is a great help for support as we cannot see what is happening at your end.

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