Python Errors and Looping Issue

Discussion created by q117772 on Jan 16, 2013
I have been working on this script for a week or more, and I don't think it should be taking this long, but I can figure it out.  I have finally (hopefully) got the looping issue taken care of, but it tells me that Name is not defined, and when i define it.  I then get the error:  <class 'arcgisscripting.ExecuteError'>: Failed to execute. Parameters are not valid.
ERROR 000860: Input raster: is not the type of Composite Geodataset, or does not exist.
ERROR 000859: The required parameter Output raster layer name is empty, or is not the type of Raster Layer.