replaceInFile replacing everything!!?

I've had a look around the forums & google but couldnt find anyone else that's had this problem.

I've been using replaceInFile to change the values of strings in config files to the installation path. I dont know what I've changed, but now it seems to replace the whole text file with the value.

here's a very cut down version of the code

OutFile "rename_test.exe"

InstallDir "$PROGRAMFILES\Scorecard"





!include StrSlash.nsh

!include ReplaceInFile.nsh

!include StrRep.nsh



!include MUI.nsh



!define MUI_HEADERIMAGE

!define MUI_HEADERIMAGE_BITMAP "${NSISDIR}\scorecard\score1.bmp"

!define MUI_ABORTWARNING

!define ROOT "c:\scorecard"



!insertmacro MUI_PAGE_WELCOME

!insertmacro MUI_PAGE_INSTFILES

!insertmacro MUI_PAGE_FINISH



Section ""



	SetOutPath $INSTDIR

		File "c:\scorecard\test.txt"

	

	Push $INSTDIR

	Push "\"

	Call StrSlash

	Pop $R0			;$R0 now contains the instdir with forward slashes



	!insertmacro ReplaceInFile "$INSTDIR\test.txt" "?REPLACE" $R0

  

SectionEnd



!insertmacro MUI_LANGUAGE "English"

the text.txt file has a few lines with random text and a few ?REPLACE words in. These WERE being replaced by the installation directory, but now it's just filling the file with that path.

where have I gone wrong??!!
thanks in advance...

Just a suggestion that you might find helpful 🙂
Did you try More advanced replace text in file?

that one has worked nicely - thank you!