swestner wrote:

> Column unknown
> CONTACT.DB_KEY
> At line 12, column 16
>
> STATEMENT:
> TIBOInternalDataset: "<TApplication>.frmMain.dlgWisql.<TIBOQuery>.<TIB
> OInternalDataset>."
>
> If I remove the Alias E in the select the select runs fine in
> Firebird 2.1 too but that's no option for me because the above select
> is part of an bigger select in which aliases are needed...

This is IBO incompatibility with Firebird 2.1, but IIRC it has been
fixed. Please try with the latest version of IBO.

--
Milan Babuskov
http://www.guacosoft.com