I've already corrected it and it didn't help. If I exclude TNT ({.$DEFINE TNTUNICODE}) it installs correct. But with TNT definition enabled I get errors:
[DCC Error] sLabel.pas(988): E2250 There is no overloaded version of 'WriteTextEx' that can be called with these arguments
[DCC Error] sCommonData.pas(8): F2063 Could not compile used unit 'sLabel.pas'
Tnt_SetCurrentDirectoryW is declared and implemented but Tnt_GetCurrentDirectoryW doesn't. I'm using quite old version from the end of 2005 and maybe here is the problem…