Hello, EPEL for CentOS contains mono-devel 2.4.3.1 but app_mono will not build against this. I assume this means that CentOS contains the wrong version of mono-devel? Does anyone know what the right version (or minimum version) of mono-devel is and can the app_mono documentation be updated to include this? Regards, Peter -- Peter Dunkley Technical Director Crocodile RCS Ltd