exception: cannot load locale 1033

I use ver 4.1.6. When I use BCB debug mode to free run Winscp.exe, the following exception occurred. "Project WinScp.exe raised exception with message 'cannot load locale 1033." The exception occurred in following code

HANDLE __fastcall TGUIConfiguration::LoadNewResourceModule(LCID ALocale,
AnsiString * FileName)
{
...
if (!NewInstance && !Internal)
{
throw Exception(FMTLOAD(LOCALE_LOAD_ERROR, (int(ALocale))));
}
}