Incredibuild fails to build when Unreal Engine is installed

I'd like to make use of Incredibuild, but I currently am unable to build with it installed. I have made no changes to Unreal Engine 4.9, nor to Visual Studio ( beyond installing Incredibuild ) I am able to compile just fine without Incredibuild installed, but as soon as I installed it, my builds fail with the following error:

Initializing...

Microsoft Visual Studio 2013 Version 12.0.40629.0. Copyright (C) Microsoft Corp. All rights reserved. 1>------ Build started: Project: Game_Sample, Configuration: Development_Editor x64 ------ 1>Build started 9/6/2015 12:03:48 AM. 1>Build: 1> Parsing headers for Game_SampleEditor 1> Running UnrealHeaderTool "C:\Users\Nakago\Perforce\warbands_MetalGear_Ray\Unreal\Game_Sample\Game_Sample.uproject" "C:\Users\Nakago\Perforce\warbands_MetalGear_Ray\Unreal\Game_Sample\Intermediate\Build\Win64\Game_SampleEditor\Development\UnrealHeaderTool.manifest" -LogCmds="loginit warning, logexit warning, logdatabase error" -rocket -installed 1>Reflection code generated for Game_SampleEditor in 7.6460043 seconds 1>Fatal Error: A Xoreax distributed job cannot be started from within another distributed job. 1> 1> 1>ERROR: UBT ERROR: Failed to produce item: C:\Users\Nakago\Perforce\warbands_MetalGear_Ray\Unreal\Game_Sample\Binaries\Win64\UE4Editor-Game_Sample.dll 1>XGE execution time: 13.25 seconds 1> 1>Build succeeded. 1> 1>Time Elapsed 00:00:13.49 ========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========