I try to save some not-automated parameter using the set/getStateInformation()- Functions. 

No I debugged my plugin, because it doesn't work with saving and loading. It seems that the two methods are never called!

Has anybody an idea whats happening there? 


In another plugin I've written its called in the right way. Dont know where there is a difference... Hope anybody has an idea? 

What host are you using? Cubase for example won’t send chunk information if the loaded plugin version is lower than the stored (e.g. stored 1.2.0, loaded 1.1.9) or if the stored plugin has more programs.

Those methods are certainly called - that's how all plugins save their state. Have you got their names right?