Error is being reported on line line 501

[Andrea S. Ossa Marín]

Hello John, good afternoon.

Could you please help me with the following? I am running Linkage Mapper in ArcMap 10.8 (as I have done many times before); however, I am getting an error that I had not encountered previously. I am copying below the exact error message that is being generated: 

Failed to execute comb_ras = arcpy.sa.Combine([alloc, alloc_sh]); comb_ras.save(combine_ras) on try #1.

The following ArcGIS error is being reported on line line 501 of "C:\EXTENCIONES_GIS\linkage_mapper_3_1_0\toolbox\scripts\lm_util.py": ERROR 010069: Unable to open input raster(s). ERROR 010067: Error in executing grid expression. Failed to execute (Combine).

Could you please help me correct it?

Cordialmente,

ANDREA S. OSSA MARÍN

Ingeniera Ambiental 

Máster en Planificación Territorial y Gestión Ambiental 

[John Gallo]

Hi Andrea,

Sure, lets get this solved!  I suspect there is an error in the resistance surface raster.  Please reply to me directly with the following and then if it is a common issue we'll report out to the full list.

Please send me the log file in the history folder of the model run . It is a .txt file.

Thanks,

John

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John A. Gallo, Ph.D.

Project Director, LinkageMapper.org

Associate, Conservation Biology Institute

Principal, John Gallo, Conservation Services