Hi all, I'm trying to upgrade to 4.2.0 from 4.0.2. I'm using the windows binaries from the download page. I replaced the new mapserv.exe and lib folders. When I try to run my old maps I get cgi errors when trying to output jpegs, like The cgi error is ÿØÿà. Thanks for any assistance, Dion Duran GIS Developer - UEI