It’s baaaaack.
On 4.9.2, I think this is a new issue. It happens when I place a custom material node (that was working a few minutes ago, then crashed, now I can’t place it at all):
Unknown exception - code 00000001 (first/second chance not available)
"Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.9\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp] [Line: 552]
Could not rename the shad
UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\core\private\misc\outputdevice.cpp:354]
UE4Editor_Engine!FShaderCompileThreadRunnable::WriteNewTasks() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\shadercompiler\shadercompiler.cpp:552]
UE4Editor_Engine!FShaderCompileThreadRunnable::CompilingLoop() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\shadercompiler\shadercompiler.cpp:753]
UE4Editor_Engine!FShaderCompileThreadRunnableBase::Run() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\shadercompiler\shadercompiler.cpp:357]
UE4Editor_Core!FRunnableThreadWin::Run() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:74]