ERROR 000735 in ArcGIS Desktop 10.5

[NeilAtchison1]

I'm running ArcGIS Desktop 10.5. (I think it's the initial release and don't know if there have been any updates since then.)

ERROR 000735 appears when I run Raster Calculator. It appears that I've correctly entered all the inputs. Is there bug in the program, or another solution? Thanks in advance for your assistance.

[curtvprice]

Please provide more information. I suggest sharing the entire error message. My guess is you have misspelled a path or model element name.

[JayantaPoddar]

Could you attach a snapshot of the Raster Calculator tool showing the pathnames and the expression?