Hello
I'm working on CS5 / XP3 and I have the same probleme. I patch the fix in the C:\Documents and Settings\Admin\Application Data\Adobe\Dreamweaver CS5\en_US\Configuration\Shared\WebAssist directory but it doesn't change anything.
I also delet the WinFileCache-xxxxx.dat file.
Helpe please
G.S
PS I note the new DocumentEncoding.js make 9 ko and the previous made 17 ko.