I'm having _occasional_ trouble viewing my lift charts.  I'm using Visual Studio and SQL Server 2005.

 The error I get is always:

 Failed to execute the query due to the following error:

Execution of the managed stored procedure GenerateScatterTableUsingDatasource failed with the following error: Exception has been thrown by the target of an invocation.Error (Data mining): The specified DMX column was not found in the context at line 571, column 28..

Sometimes if I reprocess the model, my lift chart will come out ok.  This happens on some models but not others.  All my models are against the same database.  The database is NOT a named instance.  I've tried restarting SQL Server and Analysis Services Server repeatedly, and it has no effect.

 Any thoughts?  This is a very annoying problem.