Hello, maybe i found i little bug in the TsSkinManager ! If you add a ThirdPartyClass manually it will be regornized and Skinned and also the values of the ThirdPartyList will be saved in the DFM. I have saved the ThirdPartyList from an other project and loaded in a new one and the values are listed in the ThirdPartyList, but the items will not be skinned and if you save the project and reopen it the values are lost.