Couchbase dotnet SDK OSX libcurl error

See same in forum - https://forums.couchbase.com/t/couchbase-dotnet-sdk-osx-libcurl-error/12238

dotnetcore web app on OSX 10.12.3 (16D32) Sierra

• netcoreapp 1.1
• CouchbaseNetClient 2.4.2
• Couchbase server - Version: 4.6.0-3453 Enterprise Edition (build-3453) (in docker container)

Getting the following exception: -

System.PlatformNotSupportedException: The libcurl library in use (7.51.0) and its SSL backend ("SecureTransport") do not support custom handling of certificates. A libcurl built with OpenSSL is required.

This is sort of covered in the following issue but I have check and am running a far later version (7.51.0 - Nov 2 2016) of libcurl than Jae mentioned in the following Jira ticket NCBC-1296
https://issues.couchbase.com/browse/NCBC-1296

I am trying to perform FTS and using the following as a guide, but get no results, and when I inspect my bucket.Query results.Exception I get the above message.
https://developer.couchbase.com/documentation/server/current/sdk/dotnet/full-text-searching-with-sdk.html

I have noted even in v 4.6 the FTS is not fully supported

Important: The FTS feature is a developer preview in Couchbase Server 4.6. As such, the support in the SDK is still uncomitted and the API is subject to change (although no major changes are expected as of this writing).

I dont need SSL but having it turned off in both ClientConfiguration and BucketConfiguration does not avoid the exception from happening

UseSsl = false,

Am in the middle of implementing a temporary workaround by consuming the http API endpoint directly. Currently trying with Restsharp.