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How do you fix the "Unsupported Pixel Type" error when running the Flow Direction tool while using "MFD" as your flow direction type?

Question asked by banderson1618 on Feb 28, 2018
Latest reply on Feb 3, 2019 by jug476_PennStateGIS

Here are all the messages that I got from my execution of Flow Direction, trying to use the new Multi Flow Direction algorithm in ArcGIS 10.6.

Executing: FlowDirection C:\Users\A02150284\Documents\GISData\NewBRATFile\01_Inputs\04_Topo\DEM_1\Filled_DEM.tif C:\Users\A02150284\Documents\GISData\NewBRATFile\01_Inputs\04_Topo\DEM_1\Flow\FlowDir.tif NORMAL # MFD
Start Time: Wed Feb 28 11:22:03 2018
ERROR 999999: Error executing function.
Unsupported pixel type
Failed to execute (FlowDirection).
Failed at Wed Feb 28 11:22:03 2018 (Elapsed Time: 0.05 seconds)


I've ran the tool on multiple DEMs, and none have worked. The only tool I've run on the DEM before this is running Fill on it. I haven't seen anyone else have a problem with it, though that makes sense given how new it is. If anyone has advice for how to fix this, I'd appreciate it.