I just installed the new version of the AR SDK and everything works great, moreover, some applications that before have problems, now work.
However, I haven't updated to ndk-r5, because when I try to build my apps it says:
/.../obj/local/armeabi/objs-debug/.../.o.d:1: *** Target pattern contain no '%'. Stop.
The samples apps build ok but not mines. Any ideas?