Gianfranco Arcieri wrote: > I am not able to run Proj4 on Vista with Visual Studio 2005. The same dll > with the same code runs great on Windows Xp. > Any help is appreciated Do you build PROJ.4 yourself? Have you installed Service Pack 1 for Visual Studio 2005? What error/message/... you are getting? Cheers -- Mateusz Loskot http://mateusz.loskot.net