Hello, I'm new to Data Objects .NET and running into some trouble getting it started. I'm able to build a domain in a fresh database just fine, but when I point it to my legacy database, Domain.Build fails with "System.Data.SqlClient.SqlException: Ambiguous column name 'object_id'."

This seems to happen regardless of which upgrade mode I choose, what entities exist in my assembly, or whether any entities exist at all. I've tried various connectionUrl and connectionString variations and credentials. I'd like to run DO in LegacyValidate mode eventually, but I have also tried LegacySkip, Validate and PerformSafely with the same result.

Any ideas? I'm using .NET Framework Version 4.0.30319, SQL Server 10.0.2531 and DataObjects.Net 4.4.0 build 7249.

Configuration:

<Xtensive.Orm>
    <domains>
        <domain name="Default"
                upgradeMode="LegacyValidate"
                connectionUrl="sqlserver://localhost/gigma2">
        </domain>
    </domains>
</Xtensive.Orm>

Error transcript:

Server Error in '/' Application.

Ambiguous column name 'object_id'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Ambiguous column name 'object_id'.

Source Error:

Line 36:     Private Sub InitializeDataObjects()
Line 37:         Dim config = DomainConfiguration.Load("Default")
Line 38:         Dim domain = Xtensive.Orm.Domain.Build(config)
Line 39: 
Line 40:     End Sub

Source File: C:\inetpub.api\api\Global.asax.vb    Line: 38

Stack Trace:

[SqlException (0x80131904): Ambiguous column name 'object_id'.]
   System.Runtime.Remoting.Proxies.RealProxy.EndInvokeHelper(Message reqMsg, Boolean bProxyCase) +410
   System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(Object NotUsed, MessageData& msgData) +518
   System.Func`2.EndInvoke(IAsyncResult result) +0
   Xtensive.Core.<>c__DisplayClass4`2.<InvokeAsync>b__3() +63
   Xtensive.Orm.Building.Builders.DomainBuilder.BuildSchemasAsync(Domain domain, SchemaUpgradeHandler upgradeHandler) +285
   Xtensive.Orm.Building.Builders.DomainBuilder.SynchronizeSchema(SchemaUpgradeMode schemaUpgradeMode) +365
   Xtensive.Orm.Building.Builders.DomainBuilder.BuildDomain(DomainConfiguration configuration, DomainBuilderConfiguration builderConfiguration) +594
   Xtensive.Orm.Upgrade.UpgradingDomainBuilder.BuildStageDomain(UpgradeStage stage) +406
   Xtensive.Orm.Upgrade.UpgradingDomainBuilder.Build(DomainConfiguration configuration) +419
   Xtensive.Orm.Domain.Build(DomainConfiguration configuration) +31
   GigMastersAPI.MvcApplication.InitializeDataObjects() in C:\inetpub.api\api\Global.asax.vb:38
   GigMastersAPI.MvcApplication.Application_Start() in C:\inetpub.api\api\Global.asax.vb:51

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1

Offending SQL statement:

select t.schema_id, fic.object_id, 
fi.unique_index_id, fc.name, fc.is_default, 
fic.column_id, fic.type_column_id, fl.name, i.name 
from sys.tables t inner join sys.fulltext_index_columns as fic on t.object_id = fic.object_id 
inner join sys.fulltext_languages as fl on fic.language_id = fl.lcid 
inner join sys.fulltext_indexes fi on fic.object_id = fi.object_id 
inner join sys.fulltext_catalogs fc on fc.fulltext_catalog_id = fi.fulltext_catalog_id 
inner join sys.indexes as i on fic.object_id = i.object_id 
and fi.unique_index_id = i.index_id 
where t.schema_id = 1 order by t.schema_id, object_id, column_id