The thing is, in other units of the same project (CnWizards_D102T.dll) it doesn't complain about missing TCnFlatToolbarConfigForm.
CnWizards.inc:
{******************************************************************************}
{ CnPack For Delphi/C++Builder }
{ ???ú??×???????·?????????·???·?°ü }
{ (C)Copyright 2001-2017 CnPack ??·?×é }
{ ------------------------------------ }
{ }
{ ±???·?°ü????????×????í?????ú????×??? CnPack ??·??????é???? }
{ ????????·??????????ò?? }
{ }
{ ·?????????·?°ü?????????????ü??????????????????±??????????? }
{ ???????¨??????????????±????ü?ê?????é???????? CnPack ·??????é?? }
{ }
{ ?ú????????????·?°ü??????????·? CnPack ·??????é???±±??????? }
{ ??????????·??????????????? }
{ }
{ ???????·??
http://www.cnpack.org }
{ ??×???????
master@cnpack.org }
{ }
{******************************************************************************}
{$I CnPack.inc}
{$IFDEF CNWIZARDS_LITE}
{$I CnWizards_Lite.inc}
{$ELSE}
// Wizard: CnFastCodeWizard
// {$DEFINE CNWIZARDS_CNFASTCODEWIZARD}
// Wizard: CnAlignSizeWizard
// {$DEFINE CNWIZARDS_CNALIGNSIZEWIZARD}
// Wizard: CnMessageBoxWizard
// {$DEFINE CNWIZARDS_CNMESSAGEBOXWIZARD}
// Wizard: CnComponentSelector
// {$DEFINE CNWIZARDS_CNCOMPONENTSELECTOR}
// Wizard: CnTabOrderWizard
// {$DEFINE CNWIZARDS_CNTABORDERWIZARD}
// Wizard: CnDfm6To5Wizard
// {$DEFINE CNWIZARDS_CNDFM6TO5WIZARD}
// Wizard: CnBookmarkWizard
// {$DEFINE CNWIZARDS_CNBOOKMARKWIZARD}
// Wizard: CnSrcTemplate
{$DEFINE CNWIZARDS_CNSRCTEMPLATE}
// Wizard: CnEditorWizard
{$DEFINE CNWIZARDS_CNEDITORWIZARD}
// Wizard: CnMsdnWizard
// {$DEFINE CNWIZARDS_CNMSDNWIZARD}
// Wizard: CnPas2HtmlWizard
// {$DEFINE CNWIZARDS_CNPAS2HTMLWIZARD}
// Wizard: CnReplaceWizard
{$DEFINE CNWIZARDS_CNREPLACEWIZARD}
// Wizard: CnSourceDiffWizard
// {$DEFINE CNWIZARDS_CNSOURCEDIFFWIZARD}
// Wizard: CnStatWizard
// {$DEFINE CNWIZARDS_CNSTATWIZARD}
// Wizard: CnPrefixWizard
// {$DEFINE CNWIZARDS_CNPREFIXWIZARD}
// Wizard: CnSrcEditorEnhance
{$DEFINE CNWIZARDS_CNSRCEDITORENHANCE}
// Wizard: CnFormEnhanceWizard
// {$DEFINE CNWIZARDS_CNFORMENHANCEWIZARD}
// Wizard: CnPaletteEnhanceWizard
// {$DEFINE CNWIZARDS_CNPALETTEENHANCEWIZARD}
// Wizard: CnCorPropWizard
// {$DEFINE CNWIZARDS_CNCORPROPWIZARD}
// Wizard: CnProjectExtWizard
// {$DEFINE CNWIZARDS_CNPROJECTEXTWIZARD}
// Wizard: CnCommentCropperWizard
// {$DEFINE CNWIZARDS_CNCOMMENTCROPPERWIZARD}
// Wizard: CnCpuWinEnhanceWizard
// {$DEFINE CNWIZARDS_CNCPUWINENHANCEWIZARD}
// Wizard: CnObjInspectorEnhanceWizard
// {$DEFINE CNWIZARDS_CNOBJINSPECTORENHANCEWIZARD}
// Wizard: CnRepositoryMenuWizard
// {$DEFINE CNWIZARDS_CNREPOSITORYMENUWIZARD}
// Wizard: CnDUnitWizard
// {$DEFINE CNWIZARDS_CNDUNITWIZARD}
// Wizard: CnIniFilerWizard
// {$DEFINE CNWIZARDS_CNINIFILERWIZARD}
// Wizard: CnMemProfWizard
// {$DEFINE CNWIZARDS_CNMEMPROFWIZARD}
// Wizard: CnExplorerWizard
// {$DEFINE CNWIZARDS_CNEXPLORERWIZARD}
// Wizard: CnFilesSnapshotWizard
// {$DEFINE CNWIZARDS_CNFILESSNAPSHOTWIZARD}
// Wizard: CnWinTopRoller
// {$DEFINE CNWIZARDS_CNWINTOPROLLER}
// Wizard: CnInputHelper
// {$DEFINE CNWIZARDS_CNINPUTHELPER}
// Wizard: CnSourceHighlight
{$DEFINE CNWIZARDS_CNSOURCEHIGHLIGHT}
// Wizard: CnProcListWizard
// {$DEFINE CNWIZARDS_CNPROCLISTWIZARD}
// Wizard: CnVerEnhanceWizard
{$DEFINE CNWIZARDS_CNVERENHANCEWIZARD}
// Wizard: CnUsesCleaner
{$DEFINE CNWIZARDS_CNUSESCLEANER}
// Wizard: CnIdeEnhanceMenuWizard
// {$DEFINE CNWIZARDS_CNIDEENHANCEMENUWIZARD}
// Wizard: CnIdeBRWizard
// {$DEFINE CNWIZARDS_CNIDEBRWIZARD}
// Wizard: CnScriptWizard
// {$DEFINE CNWIZARDS_CNSCRIPTWIZARD}
// Wizard: CnFeedReaderWizard
// {$DEFINE CNWIZARDS_CNFEEDREADERWIZARD}
// Wizard: CnCodeFormatterWizard
// {$DEFINE CNWIZARDS_CNCODEFORMATTERWIZARD}
{$ENDIF}
{$I CnWizards_Def.inc}