On 16.10.2012 16:14, Francois Schelling wrote: > I've created a 64 bits version of my mono.lib in order to make my > program links correctly with mono using the following command: lib > /nologo /def:mono.def /out:mono64.lib /machine:x64. The "official" Mono for Windows is 32-bit only, so creating a 64-bit import lib won't help at all. Robert