Error when trying to use web recorder

Scenario: Error hen trying to use web recorder

Steps to reproduce: Click record --> web recorder --> record

Current Behavior: generate the attached error

Expected Behavior: no error

Studio/Robot/Orchestrator Version: Studio 2017.1.6435

Last stable behavior: new install
Last stable version:new install 2017.1.6435
OS Version: Windows 7 SP1 64 bit
Others if Relevant: ( , logs, .net version, service pack, etc): .net 4.6 (394806)