I have a problem with QGIS that I've had both with version 2.2 and now with 2.8. I can't open the projects that I have saved. It is a project of 4 layers: a vector with a region of Madagascar, a river layer, a layer joined to the first one and a layer with GPS points.
When I open the project, go out a window with four columns: Layer Name, Type, Provider, Datasource. I click OK and get this message: "There are still 4 unhandled layer(s), that will be lost if you close now."
So I can't open my project.
Does anyone know what the problem is? What should I do?
I have a Mac Osx 10.9.5, 64 bit.