This is the first time that I have had this problem. Running a fresh install of both WoW and HB. Clean install and verification of dependencies both resulted in no change, and the game is running in 32-bits (x86 mode per the launcher splash screen). Error log attached:
[03:36:23.063 N] Honorbuddy v2.5.14855.813 started.
[03:36:24.915 D] Logging in to BestLatency (192.99.20.72)
[03:36:24.815 N] Logging in...
[03:36:25.350 N] T: 5247605700276526709 H: 231646135
[03:36:26.021 N] Attaching to D3D11
[03:36:26.169 N] Error attaching Honorbuddy to WoW! - System.Exception: Injection failed for some reason.
at Fasm.ManagedFasm.InjectAndExecute(IntPtr hProcess, IntPtr dwAddress, UInt32 dwParameter)
at GreyMagic.Executor.InjectEventStub(IntPtr eventStub, IntPtr injectionWaitingNamePtr, IntPtr injectionContinueNamePtr, IntPtr injectionFinishedNamePtr)
at GreyMagic.Executor.InitializeDetour()
at GreyMagic.Executor..ctor(ExternalProcessMemory memory, ExecutorInitParams initParams)
at GreyMagic.ExternalProcessMemory.***********(ExternalProcessMemoryInitParams )
at GreyMagic.ExternalProcessMemory..ctor(ExternalProcessMemoryInitParams initParams)
at Styx.StyxWoW.********(Process , GraphicsApi )
at Honorbuddy.MainWindow.\\<A|vaVD(cV)eA0\,-7LORaZJ#.MoveNext()