Probably the plugins for C/C++ you had installed previously you'll need to install again in 12.4.
Gj On Fri, Dec 3, 2021 at 12:50 PM Tom Maszerowski <tomm...@frontiernet.net> wrote: > I just took the plunge and upgraded from NB 11 to 12. When I try to open > C/C++ projects that worked fine in NB 11 nothing happens. There’s no error, > NB just doesn’t do anything. Has the project format changed? Do I need to > re-create the projects from scratch? It’s obviously not the end of the > world but I’ve got a bunch of projects and would rather not build them all > again. > > Thanks, > > Tom. > > > Tom Maszerowski > tomm...@frontiernet.net > > > > >