Repeatable Access Violations UE4Editor_Core!

Development Programming & Scripting C++
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I am trying to integrate Microsoft Casablance REST API. I am getting repeatable access violations when initializing REST http_client objects. The same test code is working with no problems in a non UE4 VS C++ project.

REST code: web::http::client::http_client client(U("http://www.bing.com/"));

UE4 Stack trace 1:

  UE4Editor_Core!rml::internal::Bin::moveBlockToBinFront()
   UE4Editor_Core!scalable_free()
    UE4Editor_Core!FMallocTBB::Free() [d:\ue4\unrealengine-4.10.0-release\engine\source\runtime\core\private\hal\malloctbb.cpp:115]
    UE4Editor_AncientGo!web::details::uri_components::~uri_components()

UE4 Stack trace 2:

UE4Editor_Core!_TBB_machine_cmpswp1() [D:\Epic\Git\UE4\Engine\Source\ThirdParty\IntelTBB\IntelTBB-4.0\src\tbb\intel64-masm\atomic_support.asm:39]
UE4Editor_Core!rml::internal::Block::freePublicObject()
UE4Editor_Core!scalable_free()
UE4Editor_Core!FMallocTBB::Free() [d:\ue4\unrealengine-4.10.0-release\engine\source\runtime\core\private\hal\malloctbb.cpp:115]
UE4Editor_AncientGo_366!web::details::uri_components::~uri_components()

These 2 have appeared multiple times, there may be others as well.

Very lost.