Errors Trying to compile

[Shurland]

I keep getting the following error when compiling my fluent mapping application

Error 1 Extending existing model can only be performed on mapped classes.
ExceptionString:
System.NotImplementedException: Extending existing model can only be performed on mapped classes.
   at Telerik.OpenAccess.Metadata.Fluent.FluentMetadataSource.CreateModel()
   at Telerik.OpenAccess.Metadata.Fluent.FluentMetadataSource.GetModelCore(MetadataContainer model)
   at Telerik.OpenAccess.Sdk.Enhancer.Enhancer.CrossDomainRunImpl(AssemblyLoader assemblyLoader)
   at Telerik.OpenAccess.Sdk.Enhancer.EnhancerBase.CrossDomainRun() F:\ClientWebsites\GlazeSmartCartFluent\GlazeSmartCartFluent\obj\Debug\GlazeSmartCartFluent.dll GlazeSmartCartFluent

Please help!

[Serge]

Hello Shurland, 

This exception should only be thrown if you have passed in a MetadataContainer in the constructor of the FluentMetadataSource, or duplicated a mapping configuration in the list of configurations that you have provided. Can you also check whether you are using the latest version of OpenAccess, we have implemented some additional check for similar scenarios. 

If that does not help, can you please send us your project so that we can have a closer look at what is happening.
 
Regards,
Serge
the Telerik team

[Shurland]

I've been able to figure it out. I forgot to typecast the mapping e.g. ... MappingConfiguration(Of Type) etc. and that's what was causing the error... a bit of reading goes a long way :) 

Thanks anyway!!