Indexing files with file system _river in scrutmydocs

hi, i want to index a windows folder (g:/docs), i use ElasticSearch:0.19.9, FS River Plugin:0.0.2 and Attachment Plugin:1.4.0. http://localhost:8080/settings.jsp at admin ui path section when write "g:\docs" "org.elasticsearch.index.mapper.MapperParsingException: Wrong value for termVector [w²th_pos²t²ons_offsets] for field [file]" exception occurred. i think i wrote invalid path, how to write valid path.? thanks