Quote Originally Posted by cloud View Post
They work on the Nuvi but not in BaseCamp. Or at least that was the case when they were last only on the SD card.

I transferred them back to the Nuvi (which meant installing the NTU Europe on the SD Card rather than the Nuvi) and at that point they reappeared in BaseCamp. Unfortunately it was soon after that that my problems started with the Nuvi crashing!
Yes I realized it and removed that text from my post.
Have you tried to remove the guide, may be it causes crashes in nuvi, just an idea, because you wrote they happened after moving it to internal memory