Problem with Nsis launcher code.

I've already saw at the Eclipse portable launcher, but with no success.

If you want to see, here is my launcher (2 parts : main, and a .nsh file.

GeogebraPortable.nsi :

; PortableApps.com & Vince'
; NSIS with Registry.nsh in Include and Registry.dll, FindProcDLL.dll, KillProcDLL.dll in Plugins

; **************************************************************************
; === Define constants ===
; **************************************************************************
!define VER 		"3.2.0.0"	; version of launcher
!define APPNAME 	"Geogebra"	; complete name of program
!define APP 		"Geogebra"	; short name of program without space and accent  this one is used for the final executable an in the directory structure
!define APPEXE 		"GeoGebra.exe"	; main exe name
!define APPDIR 		"App\GeoGebra"	; main exe relative path
!define APPSWITCH 	""	; some default Parameters

; **************************************************************************
; === Best Compression ===
; **************************************************************************
SetCompressor /SOLID lzma
SetCompressorDictSize 32

; **************************************************************************
; === Includes ===
; **************************************************************************
!include "PortableApp.nsh" 

; **************************************************************************
; === Set basic information ===
; **************************************************************************
Name "${APPNAME} Portable"
OutFile "..\..\${APP}Portable.exe"
Icon "${APP}.ico"

; **************************************************************************
; === MultiLang ===
; **************************************************************************
Var LNG
Function MultiLang
StrCpy $LNG "English"
System::Call 'kernel32::GetUserDefaultLangID() i .r0'
StrCmp $0 "1033" 0 +2
StrCpy $LNG "English"
StrCmp $0 "1036" 0 +2
StrCpy $LNG "Francais"
ReadINIStr $0 "$EXEDIR\${APP}Portable.ini" "${APP}Portable" "UserDefaultLang"
StrCmp $0 "false" +3
WriteINIStr "$EXEDIR\${APP}Portable.ini" "${APP}Portable" "UserDefaultLang" "true"
WriteRegStr HKEY_LOCAL_MACHINE "SOFTWARE\MyProg" "Language" "$LNG"
FunctionEnd

; **************************************************************************
; === Other Actions ===
; **************************************************************************
Function Init

FunctionEnd

Function Close

FunctionEnd


; **************************************************************************
; ==== Running ====
; **************************************************************************
Section "Main"

	Call CheckStart
	
	Call Init
	Call MultiLang

		Call SplashLogo
		Call Launch

	Call Restore

SectionEnd

Function Restore

	Call Close

FunctionEnd

; **************************************************************************
; === Run Application ===
; **************************************************************************
Function Launch
SetOutPath "$EXEDIR\${APPDIR}"
${GetParameters} $0
ExecWait `"$EXEDIR\${APPDIR}\${APPEXE}"${APPSWITCH} $0`
WriteINIStr "$EXEDIR\Data\${APP}Portable.ini" "${APP}Portable" "GoodExit" "true"
FunctionEnd

Portableapp.nsh :

 ; **************************************************************************
; === Set version information ===
; **************************************************************************
Caption "${APPNAME} Portable"
VIProductVersion "${VER}"
VIAddVersionKey ProductName "${APPNAME} Portable"
VIAddVersionKey Comments "Allows ${APPNAME} to be run from a removable drive."
VIAddVersionKey CompanyName ""
VIAddVersionKey LegalCopyright ""
VIAddVersionKey FileDescription "${APPNAME} Portable"
VIAddVersionKey FileVersion "${VER}"
VIAddVersionKey ProductVersion "${VER}"
VIAddVersionKey InternalName "${APPNAME} Portable"
VIAddVersionKey LegalTrademarks ""
VIAddVersionKey OriginalFilename "${APP}Portable.exe"

; **************************************************************************
; === Includes ===
; **************************************************************************
!ifdef REGKEY1
!include "Registry.nsh"
!endif
!include TextFunc.nsh
!insertmacro GetParameters

; **************************************************************************
; === Runtime Switches ===
; **************************************************************************
WindowIcon Off
SilentInstall Silent
AutoCloseWindow True
RequestExecutionLevel user

; **************************************************************************
; ===Start ===
; **************************************************************************

Function CheckDirExe
	IfFileExists "$EXEDIR\${APPDIR}\${APPEXE}" +3
	MessageBox MB_OK|MB_ICONEXCLAMATION `${APPEXE} was not found in $EXEDIR\${APPDIR}`
	Abort
FunctionEnd

Function CheckRunExe
	ReadINIStr $0 "$EXEDIR\${APP}Portable.ini" "${APP}Portable" "AllowMultipleInstances"
	StrCmp $0 "" 0 +2
	WriteINIStr "$EXEDIR\${APP}Portable.ini" "${APP}Portable" "AllowMultipleInstances" "false"
	FindProcDLL::FindProc "${APPEXE}"
		Pop $R0
		StrCmp $R0 "1" 0 CheckRunEnd
	ReadINIStr $0 "$EXEDIR\${APP}Portable.ini" "${APP}Portable" "AllowMultipleInstances"
	StrCmp $0 "true" SecondLaunch
		MessageBox MB_OK|MB_ICONINFORMATION `Another ${APPNAME} is running. Close ${APPNAME} before running ${APPNAME} Portable.`
		Abort
SecondLaunch:
	SetOutPath "$EXEDIR\${APPDIR}"
	${GetParameters} $0
	Exec `"$EXEDIR\${APPDIR}\${APPEXE}"${APPSWITCH} $0`
	Abort
CheckRunEnd:
FunctionEnd

Function CheckRegWrite
!ifdef REGKEY1
ReadINIStr $0 "$EXEDIR\${APP}Portable.ini" "${APP}Portable" "CheckRegWrite"
StrCmp $0 "false" +8
WriteINIStr "$EXEDIR\${APP}Portable.ini" "${APP}Portable" "CheckRegWrite" "true"
	${registry::CreateKey} "HKEY_LOCAL_MACHINE\SOFTWARE\PortableAppRegistryTest" "$R7"
	StrCmp "$R7" "-1" "" +4
		MessageBox MB_OKCANCEL|MB_ICONQUESTION 'You are not allowed to write to the registry!!$\nContinue anyway?' IDOK +3 IDCANCEL 0
		${registry::Unload}
		Abort
	${registry::DeleteKey} "HKEY_LOCAL_MACHINE\SOFTWARE\PortableAppRegistryTest" "$R7"
!endif
FunctionEnd

Function CheckGoodExit
	ReadINIStr $0 "$EXEDIR\Data\${APP}Portable.ini" "${APP}Portable" "GoodExit"
	StrCmp $0 "false" 0 CheckExitEnd
	ReadINIStr $0 "$EXEDIR\${APP}Portable.ini" "${APP}Portable" "AllowMultipleInstances"
	StrCmp $0 "true" 0 +4
	FindProcDLL::FindProc "${APPEXE}"
		Pop $R0
		StrCmp $R0 "1" CheckExitEnd
	MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION `Last exit of ${APP}Portable did'nt restore settings.$\nWould you try to restore local and backup portable settings now?` IDOK RestoreNow IDCANCEL CheckExitEnd
	RestoreNow:
	Call Restore
	CheckExitEnd:
FunctionEnd

Function CheckStart
	Call CheckDirExe
	Call CheckRegWrite
	Call CheckRunExe
	Call CheckGoodExit
FunctionEnd

; **************************************************************************
; === Before Launching ===
; **************************************************************************
Function SplashLogo
	CreateDirectory "$EXEDIR\Data"
	ReadINIStr $0 "$EXEDIR\${APP}Portable.ini" "${APP}Portable" "DisableSplashScreen"
	StrCmp $0 "true" +6
	WriteINIStr "$EXEDIR\${APP}Portable.ini" "${APP}Portable" "DisableSplashScreen" "false"
	InitPluginsDir
	File /oname=$PLUGINSDIR\splash.bmp "${APP}Splash.bmp"
	newadvsplash::show /NOUNLOAD 1000 300 200 0xFF00FF /L $PLUGINSDIR\splash.bmp
	Pop $0
	WriteINIStr "$EXEDIR\Data\${APP}Portable.ini" "${APP}Portable" "LastDirectory" "$EXEDIR"
	WriteINIStr "$EXEDIR\Data\${APP}Portable.ini" "${APP}Portable" "GoodExit" "false"
	SetFileAttributes "$EXEDIR\Data\${APP}Portable.ini" HIDDEN
FunctionEnd