I've been in touch with a Nokia support person at Wayfinder. She sent me a new license code, and that fixed my download problem. This license code allows a 7-day trial of Wayfinder, thereafter the default map application (pocket map) will continue to work.

I was having problem adding or deleting maps to the internal memory using filemanager. The problem went away when I backed up, reformatted, and restored the internal memory. In retrospect, I think all my problems were caused by an internal memory failure (perhaps not such a rare occurrence with flash memory).

By the way, I can't say enough good things about the Nokia support at Wayfinder. This tech responded very quickly and went back and forth with me, replying six times, until the problem was fixed. Hands down the best technical support I have ever gotten.