I changed both of those entries for the Version, but I still have the same problem.
>From what paha said in his answer there is a problem with the Public key token. Here is what I have now in the machine.config <configSections> <section name="firebirdsql.data.firebirdclient" type="System.Data.Common.DbProviderConfigurationHandler, System.Data, Version=2.0.1.0, Culture=neutral, PublicKeyToken=bae6c78ccb0fcdb3"/> <DbProviderFactory> <add name="FirebirdClient Data Provider" invariant="FirebirdSql.Data.FirebirdClient" description=".Net Framework Data Provider for Firebird" type="FirebirdSql.Data.FirebirdClient.FirebirdClientFactory, FirebirdSql.Data.FirebirdClient, Version=2.0.1.0, Culture=neutral, PublicKeyToken=3750abcc3150b00c"/> I can see the "bae6c78ccb0fcdb3" as the public key token in my Windows\Assembly\FirebirdSql.VisualStudio.DataTools. I don't know where to verify the <DbProviderFactory> token. I tried using the same one in the <configSections>, but that did nothing. Thanks for your help so far Carlos and paha, Rick > FirebirdSql.Data.FirebirdClient, Version=2.0.0.0, Culture=neutral, FirebirdSql.Data.FirebirdClient, Version=2.0.1.0, Culture=neutral, -- Carlos Guzmán Álvarez Vigo-Spain ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Firebird-net-provider mailing list Firebird-net-provider@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/firebird-net-provider