I am experiencing a problem with a Contour field that has four conditional fields associated with it, I am receiving a Javascript error saying

TypeError: (contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["b0a3522d-4daa-47f1-8760-72107507afc6"] == "Contract amendment") is not a function

When I view the source of the page and more specifically the generated conditional argument javascript I see the following:

if(
    (
        (contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["b0a3522d-4daa-47f1-8760-72107507afc6"] != null && 
                contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["b0a3522d-4daa-47f1-8760-72107507afc6"] == "Contract amendment"
        )
                || 
        (contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["5a7d2a7d-a258-49f1-8901-37d80a18a892"] != null && 
                contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["5a7d2a7d-a258-49f1-8901-37d80a18a892"] == "true"
        )
        ) &&
            (
        (contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["b0a3522d-4daa-47f1-8760-72107507afc6"] != null && 
                contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["b0a3522d-4daa-47f1-8760-72107507afc6"] == "Contract amendment"
        )
        (contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["5a7d2a7d-a258-49f1-8901-37d80a18a892"] != null && 
                contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["5a7d2a7d-a258-49f1-8901-37d80a18a892"] == "true"
        )
        ) &&
                                    (contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["b0a3522d-4daa-47f1-8760-72107507afc6"] != null && 
                contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["b0a3522d-4daa-47f1-8760-72107507afc6"] == "Contract amendment"
        )
                && 
        (contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["5a7d2a7d-a258-49f1-8901-37d80a18a892"] != null && 
                contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["5a7d2a7d-a258-49f1-8901-37d80a18a892"] == "true"
        )
                && 
        (contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["bebc9e5a-040c-4f91-b663-bde409eb1549"] != null && 
                contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["bebc9e5a-040c-4f91-b663-bde409eb1549"] != "End"
        )
                && 
        (contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["bebc9e5a-040c-4f91-b663-bde409eb1549"] != null && 
                contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["bebc9e5a-040c-4f91-b663-bde409eb1549"] != "-"
        )
    )
{
            $("#9619e9c8-fa35-47db-bda5-f97ed2a106e4").closest(".contourField").show();
                             
}
else
{
            $("#9619e9c8-fa35-47db-bda5-f97ed2a106e4").closest(".contourField").hide();
}

You will notice that this does not look to be well formed, more specifically on line 14

 &&
            (
        (contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["b0a3522d-4daa-47f1-8760-72107507afc6"] != null && 
                contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["b0a3522d-4daa-47f1-8760-72107507afc6"] == "Contract amendment"
        )
        (contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["5a7d2a7d-a258-49f1-8901-37d80a18a892"] != null && 
                contourFieldValuesbd7bc999e001499fbf2f6daa8cfbd51c["5a7d2a7d-a258-49f1-8901-37d80a18a892"] == "true"
        )
        ) 

You can see there is a closing bracket followed immediately by an open bracket with no && or ||?? The conditions that I have setup are shown in the screenshot attached:

Any ideas, is this a bug and if so can it be resolved? The version of Umbraco is 6.0.5 and the Contour version is 3.0.23.WIP-Build.17