livecode server, postgres

[Malte Brill]

Hi all,

I have no idea why this would fail:

<?lc
  local tDBConnId
  put revOpenDataBase("postgresql","127.0.0.1:5432","grabung","postgres","postgres") into tDBConnID
  put tDBConnID
?>

It is working on the Mac. It fails on UBUNTU and Windows. Return value is 

revdberr, invalid database type

Is this some sort of case sensitivity the mac is agnostic of? Lost once again...

All help much appreciated,

Malte