issue with mixed Objective-C ABI and SystemPreferences

[RIccardo Mottola]

Hi!

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