[SOLVED] IBConnection & FireBird 3 lazarus / 16-Databases ---------------------------------------------------------------------- kit · 2016-09-29 05:59 Can not open c:\Program Files\Firebird\Firebird_3_0\examples\empbuild\EMPLOYEE.FDB Error: usupported on-disk structure for file .. found 12.0, support 11.2 ---------------------------------------------------------------------- LacaK · 2016-09-29 09:37 It is not related to IBConnection, but to Firebird SQL Server version versus database version. You must look at your instalation of Firebird. (it seems like you are opening FB 3 database with FB 2.5 server or embeded client DLL) ---------------------------------------------------------------------- Devstructor · 2016-09-29 13:24 Hi, what is your hostname and databasename of your TIBConnection component? You may use the embedded server? Are you using the correct firebird library? ---------------------------------------------------------------------- talorigomat · 2016-09-29 14:25 Assuming you are using the embedded version of Firebird, then replace fbembed.dll in your application folder with a copy of fbclient.dll from the firebird folder. ---------------------------------------------------------------------- kit · 2016-09-30 08:15 It work after delete all dll files from my app folder)