mordern license page prob

I am new to NSIS and got the following problem:
I compile my script without a warning or error, but the license text is missing. The page apears but no text in the box. the path to the txt must be ok because if its wrong I got a error message.
I use:
LicenseData "res\gpl.txt"

!define MUI_WELCOMEPAGE
!define MUI_LICENSEPAGE
!define MUI_COMPONENTSPAGE
!define MUI_DIRECTORYPAGE
!define MUI_FINISHPAGE

!define MUI_ABORTWARNING
!define MUI_UNINSTALLER
!define MUI_UNCONFIRMPAGE

any ideas?
thx

Have you used LicenseText? You must use LicenseText or the page will be empty.

I got it. I have to use:

LicenseData /LANG=${LANG_ENGLISH} "res\gpl.txt"
LicenseData /LANG=${LANG_GERMAN} "res\gpl.txt"
LicenseData /LANG=${LANG_FRENCH} "res\gpl.txt"
LicenseData /LANG=${LANG_SPANISH} "res\gpl.txt"

thx