deskscapes does not change my wallpaper

im having problems with deskscapes, i have installed it through impulse,.

i can open the control panel but when i select a dream wallpaper nothing happens, the wallpaper i had before is still visible.
although going to change the wallpaper the normal way it shows i have the dream wallpaper selected.

im running vista home premium, nvista 8600 gt, dual monitors with ultramon. i have got the latest drivers, direct x 10 and i have lots of codecs
(i have tried disableing some of them but still nothing)

i have seem simular posts but unfortuantly cant find an answer to help, the information from the deskscapes control panel - about section is below
Windows Vista 32-Bit
DreamControl.dll   14/10/2008 15:55:09       v2.00 (#106)
DesktopControlPanel.dll  05/05/2008 19:14:24       v2.00 (#106)
WallpaperPage.dll   05/05/2008 19:14:25       v2.00 (#106)
DreamTasks.exe   14/10/2008 15:55:09       v2.00 (#106)
DreamSwitcher.exe   14/10/2008 15:55:09       v2.00 (#106)
DreamThumbnails.dll  18/11/2008 01:31:56       v2.00 (#106)
DeskScape.dll   18/11/2008 15:14:44      
DeskScapes.dll   18/11/2008 01:31:56      
Activate.exe   24/04/2008 19:01:34       v1.04 (#8)
d3dx9_30.dll   18/11/2008 01:31:15      
d3dx9_32.dll   18/11/2008 01:31:15      

once again any help appreciated.

Ash