At the top level of the Building Tree, you have selected a Location for the building, but the weather file associated with this location is missing from your computer. This weather file is required in order to perform the calculation you have specified.
At the top level of the Building Tree, click on the option for User Defined on the location. Now click on the Edit option and see what weather file location is specified.
You must now verify that this weather file location selected has a valid weather file located in the Program Files\EnergyPro 6\Weather folder on your hard drive.
In most cases, you should not specify your own location data. We suggest you uncheck the option for User Defined data and pick a stock location from the list of locations.
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