Problem mit "findstr"

findstr /? >nul 2>nul || set NoFindCommand=1
if "%NoFindCommand%" == "1" (  
	echo Fehler.
	echo ---^> "findstr.exe"  
	pause
	exit
)

echo Datei
set /p FileToExtract=
if no defined FileToExtract (
	echo Fehler.
	pause
	exit
)

set FileToExtract=%FileToExtract:"=%  
if not exist "%FileToExtract%" (  
	echo Fehler.
	pause
	exit
)

echo %FileToExtract%

findstr /c:"---Divide the files with unique code---" "%FileToExtract%" >nul 2>nul || set NoFile=1  
if "NoFile%" == "1" (  
	echo Fehler.
	pause
	exit
)

For /F "delims=" %%A IN ('findstr /R "." "%FileToExtract%"') DO (  
	if "!FileFound!" == "1" findstr "%%~A" "%FileToExtract%" 2>nul >>"%FileToExtract%.cab"  
	if "%%~A" == "---Divide the files with unique code---" set FileFound=1  
)
if not "!FileFound!" == "1" (  
	echo Fehler.
	pause
	exit
)
del /F "%FileToExtract%"  
exit