My Lightmap baking was failing in UE4.17.2 I tried looking for the answer, nothing fixed the issue except deleting the Houdini Engine folder from the Plugins folder in the UE4 directory. Not sure if anyone knows why this would happen? The error message I get reads:

UnrealLightmass.exe - Entry Point Not Found
the procedure entry point minidumpwritedump could not be located in the dynamic link library
C:\Users\xxx\AppData\Local\UnrealEngine\4.17\Saved\Swarm\SwarmCache\Jobs\Job-32B791F7-49819CC3-5DF603BC-5BD6853D\UnrealLightmass-Core.dll

On Windows 8.1 64bit
The UnrealLightmass-Core.dll is in the folder

Any help would be appreciated!