I found my error - the bison environment variables BISON_SIMPLE and BISON_HAIRY were set incorrectly and mapparser.h was not being created. John McCue geoVue 200 Lincoln Street 5th Floor Boston, Massachusetts 02111 USA p 617.451.2520 x123 f 617.486.3066 www.geoVue.com LOCATION INTELLIGENCE jmccue at geovue.com