I recently downloaded the offline version of the maps from the other thread where you posted, copied them to cities/diskcache,, and I am having the same problem. Maps just crashes after trying to load for a while.

The difference is I still have the default location for everything.

Edit: I just renamed the entire cities folder. The Maps application recreated it, and now it works again but obviously without the offline maps.

Edit2: I deleted the offline maps and copied a fresh copy. I did not however copy CachedatHeader.cdt. Now the Maps app loads up fully, displays a section of map I cannot recognize and crashes within 5 seconds.

Progress?