Cloesy, I was having the same problem. The solution was to add the term "ROOT" into the xbmp .ini file plus a root file name (can be anything) then in your relax set up creat a file w/the same name and then share whatever files you want under that "root" name. Personally i just added the entire HD's ie; d/,e/ to the file and now have full access.
LMK if this helps.
SB