October RS Refresh Failure

[stretcharm]

Hi,

Is anyone getting a refresh failure from the new Oct PowerBI RS?

I have a couple of small powerbi docs with odata and sql server connections and they refresh fine.

However I have a more complex powerbi that gives me this error.

The data source test connections all work fine. Any thoughts on where I can look for more details on this error?

I can see these details in the ExecutionLog3 view

	ItemPath	ExecutionId	RequestType	Format	Source	Status	ItemAction
1	/TMGSupport/SSISDB_Dashboard_dev - PA_v0_78test	7633ac5c-8421-453b-84ac-38cc776ca0f5	Refresh Cache	DataModel	Live	rsInternalError	DataRefresh
2	/TMGSupport/SSISDB_Dashboard_dev - PA_v0_78test	7633ac5c-8421-453b-84ac-38cc776ca0f5	Refresh Cache	DataModel	Live	rsSuccess	ASModelStream

 This is what we see in the Log file.

Status: Error Failed to refresh the model, Exception System.ArgumentException: An item with the same key has already been added.

I've got other similar powerbi docs that refresh fine, however this one is pretty complex with 2 SQL Server data source.

Phil