Hi, Manu, In revision#74355, EB_RESET_LAYOUT_COMMAND is improved. Now it always reset docking layout by codes (previously it reset docking layout from docking data file which can be corrupted) I think we don’t need to delete the docking data files anymore. Using Eiffel Studio View menu-> `Reset tools layout’ is enough. For docking data invalid issue… docking library always tries to restore widget docking layouts from docking data, it ignore errors in the docking data (the errors are: some tool bars can’t be found, or tool contents can’t be found). After ignored the errors, maybe you will saw a `completely messed up’ docking layout sometimes… other times, after ignore the errors, the docking layout is still acceptable… So I’m not sure if errors happens, we recreate a new docking layout directly is good idea…