Failed Weighted Sum

[EthanUpton]

I am trying to run the Weighted Sum tool but I keep getting the Error 010050 Cell size not set. The problem is that I have set the cell size in the environment and can't quite figure out the issue. Any ideas?

[curtvprice]

See my response above

Cell Size (Environment setting)—Geoprocessing | ArcGIS Desktop 

[StephanieAinsworth]

I had the same issue then I got rid of the mask I had in environments and Weighted Sum worked like a charm

[DavidWasserman]

I don't like that this is the answer...I actually used a mask for my processing. It sounds like it might just make sense to use a processing extent and then mask after then? 

[curtvprice]

It may work better if you use a raster mask instead of a polygon. The behind the scenes vector to raster processing doesn't always perform well, especially if the polygon is complex.  Also, I didn't mention, for heavy raster processing it is best practice to set the scratch workspace to a local, nicely named folder. This allows these (so-called) in-memory temporary rasters used by map algebra to be written quickly to disk.

[JohnLowry2]

Removing the raster mask worked for me!