In DW8 with Crossover 6.1.0 I have found a problem with the Site Map. In some instances the site map tree does not show. There appeared to be be a single file with heading "Site Navigation .. Untitled" & no tree. It seems to occur when there are a large number of files in the tree & seems OK with small numbers: this is just a guess.
DW8 was set up in cx in both Ubuntu Dapper & Feisty using the files from an XP installation like the instructions at:
http://virtualdreamscapes.blogspot.com/2006/11/dreamweaver-8-running-on-linux-fedora.html
This problem does not exist with the same website with wine 0.9.40 using the same set up.
I hope this is of help. Any explanation of how to overcome this problem would be welcome.