Problem with ISSkin please helpme

Hi, im making a cool setup using Inno Setup and some thirdy parts addons.

My setup uses ISSI addons like background, custom wizard images, headerimage and music and offcourse also
ISSkin by CODEJOCK, if i remove the all ISSkin related in the INNO script i get the setup.exe without the skin,
but if i try to use the ISSKin i get the next error in the compilation procedure :


"Duplicate identifier 'INITIALIZESETUP'"

When i click "Find Error" to try found the "duplicate entries" i cannot found any duplicate identifier and the
INNO send to me to the like error wheres :

function InitializeSetup(): Boolean;

the problem is all the [code] section dont show like the usuall colors in the rest of the code, look yourselft :




where is should try to found the error? i follow step by step to add all the code, even is on [files] the files needed (skin + isskin.dll) already added,
i didnt miss anything, any idea?. where i should search to fix?

EDITED :

THE PROBLEM seems to be related with ISSI, if i remove ISSI (for background, musics, and custom images) the Inno compiles everything ok,
but i need to keep the ISSI to keep my custom images, backgrounds, music, splash screen, etc..

the code is :

[ISSI]
;; Name of the bitmap image:
#define ISSI_SplashScreen "c:\splash.bmp"

;; Time in seconds:
#define ISSI_SplashScreen_T 2

;; Image Width:
#define ISSI_SplashScreen_X 576

;; Image Heigth:
#define ISSI_SplashScreen_Y 224

; Ass background Image
#define ISSI_BackgroundImage "c:\background.bmp"

;; OPTIONAL: Overrule the standard background color
;; clBlack (default), clMaroon, clGreen, clOlive, clNavy, clPurple, clTeal,
;; clGray, clSilver, clRed, clLime, clYellow, clBlue, clFuchsia, clAqua, clWhite.
;; OR:
;; value in the form of $bbggrr, where rr, gg, and bb specify the two-digit
;; intensities (in hexadecimal) for red, green, and blue respectively.
#define ISSI_BackgroundImage_BGColor "clBlack"

;; Add Music
#define ISSI_PlayWave "c:\bgmusic.wav"

#define ISSI_PlayWaveLoop

;; The WizardSmallImageFile
#define ISSI_WizardSmallImageFile "c:\modern-header.bmp"
#define ISSI_WizardSmallImageFile_x 164

;; Optional: align will switches alignment of the image
#define ISSI_WizardSmallImageFile_Align

;; Include ISSI:
#define ISSI_IncludePath "C:\ISSI"
#include ISSI_IncludePath+"\_issi.isi"

SEEMS THE PROBLEM IS ON _ISSI.ISI i will attach the file _issi.isi, someone can modify to work both issi + isskin in armony?

http://www.mediafire.com/file/nwytj5jwmdz/_issi.isi