Just a guess: maybe there's still an Interbase gds32.dll lying around?
Have you tried putting the fbclient.dll matching your Firebird server
into the same folder as your application's exe?
Or search IBO sources for IB_GetClientLibNameFunc and use that to
specify which client library it should use.

HTH,
Markus

On Tue, Feb 12, 2013 at 7:19 PM, Adrian Wreyford <wreymed@...> wrote:
>
> I noticed that after installing XE3, and installing latest sources of IBO, and getting all to compile that I could no longer connect to my databases, using my apps, some compiled with Delphi XE.
>
> I then removed the interbase XE3 from my PC.
>
> I can connect using a third part SQL tool to my databases, but not using IBO, even with my previous versions of software compiled with XE.
>
> I reinstalled FB 2.5.2.26539
> I checked that service is running in services manager Win7 64 bit.
>
> When I try to log on to any application I get:
> ISC ERROR CODE: 335544375, Unavailable database.
>
> All the databases are there.
> The service is running.
>
> Any ideas what could have destroyed all that was working up to installing XE3, and Interbase support that gets installed by default.
> I have removed the interbase for XE3 from my system.
>
> When trying to connect to my remote server with my software also written with Delphi XE, and IBO, the remote host refuses the connection, but I can connect to it using my SQL tool.
> ISC ERROR CODE: 335544421, connection rejected by remote interface.
>
> Thanks
>
> Adrian