Iterate cost distance/cost path over multiple points

Question

I have multiple source points in one shapefile and one destination point in a separate file. I would like to find the least cost path from each source point to the destination point. My costs are weighted using a DEM (elevation only). I am using ModelBuilder to iterate over each source point to produce a cost distance and cost backlink raster to feed into the cost path tool.

I've run the iterator and cost distance tool and they function properly, but when I add in the cost path tool, I get multiple errors after the first source point run:

ERROR 010236: Error in building VAT.
ERROR 010067: Error in executing grid expression.
ERROR 010414: Error in creating a Raster from a geodataset.
Failed to execute (Cost Path).

I'm not very Python-savvy and am using ModelBuilder.

Answer 1

The destination point was outside of the spatial extent of the origin points. Once I adjusted that, it all ran fine.

Here's a link to the post that contained the solution I used: https://geonet.esri.com/thread/77736#post315923