Hello!
You should remove all DevEx classes from the sSkinManager1.ThirdParty list.
Please read the 3rd party.txt file how to use DevExpress with AlphaSkins :
– Install DevExpress and AlphaControls
– Enable the 'DEVEX6'(if old DevEx version used) or 'DEVEX2011' key in the sDefs.inc file (AlphaControls), must be {$DEFINE DEVEX6} or {$DEFINE DEVEX2011}
– Be sure that latest version of DevExpress is installed if 'DEVEX2011' key used, or check a list of supported DevExpress versions in the beginning of the acLFPainter.pas file (AlphaControls)
– Configure the sSkinManager component and compile the project.