I have a Nuvi 255W. I was able to transfer caches to this unit until I got a new computer, and now (obviously, since I'm posting this) I can't. The major problem that I see is that the macro which prepares a .GPX file for POILoader is creating a file for POILoader 2.5.2. The only version available from Garmin is version 2.6.
Does anyone know how to get caches onto a Nuvi?