Grating rf mapper error

Hi there!

We are interested in utilizing the grating rf mapper. When running this task an error occurs. We observe the same error message across several different machines. The output message indicates:

Index in position 1 is invalid. Array indices must be positive integers or logical values.

Error in Grating_RF_Mapper/analyze (line 41)
left=obj.Tracker.KeyInput(end,1);

By comparison, we are able to run the rdm rf mapper without issue. Any insights would be appreciated. Please let us know if any other information would be useful.

Go to "Other device settings" and put "37 38 39 40" in the "Key code" field.

This worked, thanks so much Jaewon!