[Qt-creator] Project ERROR: Module designercomponents has no public API.

[Guido Seifert]

This is what I get, when I try to compile the current qt-creator
(c9d1c5b3540971c2551e58e39d8715366b3c4d2a): Project ERROR: Module
designercomponents has no public API.

With a few days old Qt 5.2.0.

Any ideas?

Guido