[GeoNetwork-users] Thumbnail problems with customized schema

hi,

I followed the follow instruction to create customize geonetwork
template on the geonetwork opensource network:
http://geonetwork-opensource.org/documentation/how-to/geonetwork-v2-2-shema-template-howto

the thumbnail can be added but cannot be displayed, this is a big
problem for me, the above instruction mentioned about it, however,
there are no solutions till now.

anybody can present any support, I am eager to make my setting up of
geonetwork show thumbnails.

Thanks

Runda Liu