SlideShowExtender not working in production server

SlideShowExtender gets images list from webservice. This works fine on localhost in VS2008 but doesnot work on the production hosting server. Hosting is a shared hosting provider. I have tried a simple 'Hello World' webservice and this works fine in both environments. The webservice is getting a list of image files from a folder in the website file system. i have been trawling google and forums for over a day now and while people have had problems no one has provided a solution. Output from the invoke button in localhost is:

<ArrayOfSlide>
<Slide>
<ImagePath>../images/show/01_Clinic2.jpg</ImagePath>
<Name>01_Clinic2.jpg</Name>
<Description/>
</Slide>
<Slide>
<ImagePath>../images/show/02_banner_01.jpg</ImagePath>
<Name>02_banner_01.jpg</Name>
<Description/>
</Slide>
</ArrayOfSlide>

etc;

Does any one have any ideas? Where to start? It would be helpful if I could see the webservice output?

Thanks in advance.