dear RegCNeters

I try to run RegCM4.1. When I get the results and want to plot in Grads, there is some problems which is like this,

how to deal it? Or there is some special paratermeters in test_001.in that need carefully setted.

ga-> sdfopen K:\RegCM4\Test\S\output\test_001_ATM.2000020100.nc
Scanning self-describing file:  K:\RegCM4\Test\S\output\test_001_ATM.2000020100.
nc
SDF file has no discernable X coordinate.
ga->