Access violation - code c0000005 (first/second chance not available) UE 4.15

Hi everyone,

When we do a build of the project we get this error immediately and it crashes the program. We can run a light build separately and it works fine. We want to do a complete build and are running into this error.

Thanks for the help.

Access violation - code c0000005 (first/second chance not available)

UE4Editor_Engine!RecastGeometryExport::StoreCollisionCache() [d:\luist\enginebuild\unrealengine\engine\source\runtime\engine\private\ai\navigation\recastnavmeshgenerator.cpp:304]
UE4Editor_Engine!FRecastNavMeshGenerator::ExportComponentGeometry() [d:\luist\enginebuild\unrealengine\engine\source\runtime\engine\private\ai\navigation\recastnavmeshgenerator.cpp:4140]
UE4Editor_Engine!TBaseStaticDelegateInstance::ExecuteIfSafe() [d:\luist\enginebuild\unrealengine\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:1027]
UE4Editor_Engine!FNavigationOctree::DemandLazyDataGathering() [d:\luist\enginebuild\unrealengine\engine\source\runtime\engine\private\ai\navigation\navigationoctree.cpp:52]
UE4Editor_Engine!FRecastTileGenerator::DoAsyncGeometryGathering() [d:\luist\enginebuild\unrealengine\engine\source\runtime\engine\private\ai\navigation\recastnavmeshgenerator.cpp:1731]
UE4Editor_Engine!FRecastTileGenerator::DoWork() [d:\luist\enginebuild\unrealengine\engine\source\runtime\engine\private\ai\navigation\recastnavmeshgenerator.cpp:1673]
UE4Editor_Engine!FAsyncTask::DoWork() [d:\luist\enginebuild\unrealengine\engine\source\runtime\core\public\async\asyncwork.h:264]
UE4Editor_Engine!FAsyncTask::DoThreadedWork() [d:\luist\enginebuild\unrealengine\engine\source\runtime\core\public\async\asyncwork.h:288]
UE4Editor_Core!FQueuedThread::Run() [d:\luist\enginebuild\unrealengine\engine\source\runtime\core\private\hal\threadingbase.cpp:442]
UE4Editor_Core!FRunnableThreadWin::Run() [d:\luist\enginebuild\unrealengine\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:76]