Hi I have found a roundabout way to my issue but I wanted to see if anyone else has been encountering this and wanted to know why IT WAS HAPPENING. Every I ran the statement below in Raster Calculator I kept getting an error message (also displayed below). However, this exact statement would run perfectly in 9.3. Any suggestions as to why this error keeps popping up? Thank you for your time. Statement in Raster Calculator: Con((("%elev%" > 1500 & "%elev%" < 2500) & ("%mat%" > 165 & "%mat%" < 215) & ("%slope%" > 1800 & "%slope%" < 10500) & ("%pcp_drym%" > 15 & "%pcp_drym%" < 24) & ("%pcp_wetm%" > 150 & "%pcp_wetm%" < 220)), 1, 0) Error Received upon Execution: ERROR 000539: Error running expression: rcexec() <type 'exceptions.ValueError'>: The truth value of a raster is ambiguous. Failed to execute (Raster Calculator).
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