Changing the data source file - best practice?

Thanks for your input.

Yes it is but I have just cracked it.

Basically, the item named in the error is the sheet name so once I changed that over it has remedied it. The only issue is that I need to change data source and worksheet name under every tab in Navigation step now.

I think I will simply need to remember to rename worksheet every time I download the source file to something common amongst all queries as I do with the filenames generally.  Even when setting a new project up, it is clearly important to maintain a level of consistency in naming conventions.