At 09:22 PM 8/04/2008, you wrote:

>The object in use is: TIBDatabase.

That is IBX, not IBO.

>In other computers (when the only version installed for firebird is
>1.5) this works fine.
>The problem is only in that one computer where I tried to install the
>2.0.3.
>Full Database name: "C:\\PSI_SI\\EPG2_B11\GUI\\DEBUG_BUILD\\EPG.GDB"

That is not a legal connection string. If you replace the double backslashes with singles, then you will have a legal database path - assuming that each of the elements preceding the file name are names of physical directories. But if the application is connecting remotely, or locally from a remote desktop shell, you need a legal network path, i.e., the database path preceded by the correct hostname expression for the protocol you want to use. So, supposing the machine where the Fb server and the database file are located is called myhost:

For WNET protocol:

\\myhost\C:\\PSI_SI\\EPG2_B11\GUI\\DEBUG_BUILD\\EPG.GDB

For TCP/IP protocol:

myhost:C:\\PSI_SI\\EPG2_B11\GUI\\DEBUG_BUILD\\EPG.GDB

Helen