[mapguide-users] Viewer sample application problem

[rudy.pavan]

Hi,
when 
http://localhost/mapguide/dotnetviewersample/ajaxtiledviewersample.aspx
is loaded,layer panels display :

?Roads
?Districts
?Buildings
?Parcel
?Island
?hydrography
?CityLimits

and i can't view any map,but i see a light brown background.
Can anyone explain to me how to resolve these problems?

Note:Sheboygan is correctly loaded
I've just search a solution in nabble's forum,but i don't have find 
nothing.

Thanks,
Rudy