Sorry
Before I get this error
subform.pas(65,13) Fatal: Can not find unit Chart used by subform.
then comment if the unit tells me
/home/francesco/Documenti/Lazarus_Components/subform-0.1/subform.pas(165,48) Error: Call by var for arg no. 2 has to match exactly: Got "TControl" expected "TComponent"
lresources.pp(911,11) Hint: Found declaration: ReadComponentFromBinaryStream(TStream,var TComponent,TFindComponentClassEvent,TComponent="nil",TComponent="nil",TComponent="nil");
/home/francesco/Documenti/Lazarus_Components/subform-0.1/subform.pas(286,5) Error: Identifier not found "TBarChart"
/home/francesco/Documenti/Lazarus_Components/subform-0.1/subform.pas(642) Fatal: There were 2 errors compiling module, stopping