Hi all!! and thanks for all the replies. I tried everything I could, but the
problem is still there. I'm not testing it in my pc, because the problem appears
in my customer's network, which is in another part of my country, so I can't see
what happens myself. All I have is my customer's reports...

> I also doubt your problem is firewall related, because the I/O error
> would come from the server itself. You can always test it with:
> telnet server_name 3050
> The screen should just go blank if OK.

My customer says that the telnet does not conect... Actually i'm not used with
this command so I can help much in this matter...

> Are there spaces or non ascii chars in folder name?

No, this is the real path name: Lukitas:C:\SEV\DATOS.FDB

> Are you using the exact same string on both the client and server?

Yes, the string is in a DBF file on the app folder

> Are you using either Superserver or Classic server?

Superserver

> Is the folder name you listed the folder name as seen by the server or
> are you trying some sort of network share (that won't work).

Yes



I've also tried to conect with IBExpert (trial) and this is what I've got:

Attempting to connect to:
Lukitas:C:\SEV\DATOS.FDB

Connecting... Failed!
------------------------------------
Unsuccessful execution caused by a system error that precludes
successful execution of subsequent statements.
Unable to complete network request to host "Lukitas".
Failed to establish a connection.
Se produjo un error durante el intento de conexión ya que la parte conectada no
respondió adecuadamente tras un periodo de tiempo, o bien se produjo un error en
la conexión establecida ya que el host conectado no ha podido responder. .

Attempting to connect to services manager... Failed!
------------------------------------

Unsuccessful execution caused by a system error that precludes
successful execution of subsequent statements.
Unable to complete network request to host "Lukitas".
Failed to establish a connection.
Se produjo un error durante el intento de conexión ya que la parte conectada no
respondió adecuadamente tras un periodo de tiempo, o bien se produjo un error en
la conexión establecida ya que el host conectado no ha podido responder. .

Disconnecting from database... Passed!

------------------------

Thank you for any help!!!

-sergio