I tried to Import a 684KB file that contains 6400 Waypoints. These waypoints do not have any additional data other than Name and Lat/Lon.
Yet, each time I try to Import this GPX file, beta-BC crashes after working on the Import for about 4min. The crash report is attached.
This file opens fine in MapSource and BC-PC (other than taking about 3min. to load). I don't currently have BC-Mac installed so I can't test it.