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    By David Crowther 

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    Question:

    When I open a MapThat Project I get an error message stating – sequence contains no elements – what is causing this?

    Answer:

    This issue can be resolved by ensuring that for the chosen project you have at least one layer associated to it. Using the MapThat Admin forms, simply tick to reveal a Layer in a specific Tree and also ensure that the Layer is visible by at least One Role.

    The Project will now open successfully.