Very nice component, only wish is 1.5 native version.
I encountered the problem of reading pdfs in Latin1 encoding, so database population stopped at special characters like ë and à. Because Joomla 1.5 is utf-8, you need to get the text from the pdf in utf-8 also. You can change the command line of the pdftotext command for this. In admin.file_index.php near line 350 you change
pdftotext \"$original_name\" - 2>&1
to
pdftotext -enc UTF-8 \"$original_name\" - 2>&1
watch for the local and the component command
I don't know if this works for the Windows command.
Great component!