Thanks for the reply! Actually, when I did the discrete phylogeographical diffusion, I had problems with spreadD3 as well so I switched to a previous version of Spread and an online spread tool (
https://spreadviz.org/home), which both seem to work just fine. But it ran into some issues again when I tried to calculate the Bayes factor. For the continuous one, here is the link to the zip file that contains the tree and the log file Beast generated, and the XML file (
https://drive.google.com/file/d/1NErA_bUHSerPeFDjrl0gNYMw75a7KjY6/view?usp=sharing). Also is there any other way to talk to you? Since I don't belong to this group so my message will always get sent out delayed. Thanks a lot again!