I have received some isopachs contour line which I have tried to interpolate with the "Topo to raster" tool in Spatial Analyst. I had the same task a while ago and I didn't have any problem in doing so. Now I got all the time a message of error. I thought that it could be due to the data I have received so I tried again to do the Topo to raster with the previous data which I did interpolated a while ago successfully and now I get the message of error for them as well.
I do not really understand how is it possible. Does anyone has any suggestions?