sparta dockmanager not compiling on Lazarus 2.1 / fpc 320RC1

[mangakissa]

When installing sparta_dockedform_editor package, it comes with a error message:

sparta_mainide.pas(1036,67) Error: Internal error 200510032

this is on line 1036

Code: Pascal  [Select][+][-]

1.   if Sender = nil then // but not for Sender = nil :P
2.     LPageCtrl := SourceEditorWindows[LastActiveSourceEditorWindow].FPageCtrlList[LastActiveSourceEditor]  <--this line will not compile
3.   else
4.     LPageCtrl := AbsoluteFindModulePageControl(LSourceEditor);    
5.