I am keeping an eye on this as it may be related to my issue at Meadow OS Flash Failure - #3 by treygourley
As of right now I am getting errors like:
Connecting to Meadow on COM3
An error occurred while attempting to create Meadow
System.IO.FileNotFoundException: Could not find file 'COM3'.
File name: 'COM3'
at System.IO.Ports.SerialStream..
The only difference for me is that my Meadow is on COM3.