Whoo hoo! It took me a while but I finally figured out the problem. It has nothing to do with the number of waypoints I am trying to download. There was one particular cache in the file that caused the error message. That cache was http://coord.info/GC3B219 Once I deleted that file from GSAK everything worked fine. This is because the file name is not understood by the Nuvi so to include that file in my download I must rename the cache something else before I export it to the nuvi. So glad this issue is finally resolved [Smile]