Cannot use Natural Neighbor when a table is joined to a feature class

Discussion created by abrown31 on Jun 9, 2011
Latest reply on May 5, 2013 by samb22
I was trying to use Natural Neighbor to interpolate some concentrations. I joined an Excel table with the concentrations to my feature class based on site location ID. I was able to successfully see the join in the attribute table. I selected the feature class and the Z-Value, sheet1$.value, in the Natural neighbor window and click Run.

Every time I executed the tool, an error was produced: ERROR 010134: Input does not contain a feature class. I know I selected the input feature class and the Z-Value, so what's the deal?

Is this a bug, or am I not allowed to use the Z-Value of a joined table in this tool?

I was able to get around this bug, but I feel that the tool is malfunctioning.