prevent multiple instances

Function .onInit

!insertmacro MUI_LANGDLL_DISPLAY



System::Call 'kernel32::CreateMutexA(i 0, i 0, t "myMutex") i .r1 ?e'

 Pop $R0

 

 StrCmp $R0 0 +3

   MessageBox MB_OK|MB_ICONEXCLAMATION $(AlreadyRun)

   Abort

FunctionEnd

Why $(AlreadyRun) shown only on one language?

The multi-language codes don't work in .onInit. See also this thread:

thanks