solr search, indexing problem

it seems that the solr does not index the data well. only 32 & 20 bytes:

-rw-rw-r-- 1 32 2012-05-10 12:49 segments_1
-rw-rw-r-- 1 20 2012-05-10 12:49 segments.gen

any help is appreciated.

more info:
i can access to http://localhost:8080/solr/ which shows "Solr Admin' link

Omeka config. localhost 8080 /solr/

Moreover, when i do a search, it gives:

Fatal error: Call to undefined function html_espace() in /opt/lampp/htdocs/project/g3/plugins/SolrSearch/helpers/SolrSearchFunctions.php on line 320

i am running Omeka 1.5.1, it seems that Solr Search supports only 1.3. is it the problem?

I have the same error message. It actually just a mis-spelling in origional code. It was html_espace(). I change it to html_escape and it works fine.