From the error message I would suspect that you have an old plugin for SystemPreferences lying around that still gets loaded causing this issue.
> Am 05.01.2020 um 23:01 schrieb RIccardo Mottola <riccardo.mott...@libero.it>: > > I was able to compile most of GNUsteps apps with the options discussed in a > previous mail, the only combination I got working is clang + Obj-C 2. > > Most apps seem to work fine, including GWorkspace (which loads inspectors > just fine) and ProjectCenter. > > SystemPreferences instead does not start! > > I get this issue: > > Version 2 Objective-C ABI may not be mixed with earlier versions. > > and a crash. Why? No real clue yet. > > I checked compilation of SystemPreferences with messages=yes and clang is > used. > > More ideas? > > Riccardo > >
