Hmmm, it’s not overly clear what is going wrong but the key is probably the files that you zipped up:

Base Exception Type: System.ArgumentNullException: Value cannot be null.
Parameter name: ipString
at System.Net.IPAddress.InternalParse(String ipString, Boolean tryParse)
at NetworkCommsDotNet.ConnectionInfo.OnDeserialise()

This suggests you are sending/recieving a ConnectionInfo somewhere and you are creating it will a null reference somewhere. This is subsequently throwing an exception at some time later. Looking at the source we don’t validate data on creation of a ConnectionInfo object, although we probably should be.

Marc