. . . loading the page, will not be indexed. Indexing with a search engine like Sphider-plus is very problematic on a 'SharedHosting' server. Indexing huge amount of links might be interrupted, because the granted time slice might end before index procedure is finished. Especially if you intend to index not only text, but also media content like . . .
. . . 64 .script $1 $2 $3 \- 7. Did you install Sphider-plus on a 'SharedHosting' server? If you are sure that physical path to the converter is correct (see: admin backend / Statistics / Server-Info / PDF-converter), but your PDF documents are not converted, there might be another approach. . . .