When calculating in EnergyGauge USA you may occasionally get the errors shown below.

If one of these errors occurs it is most likely because the calculation was run from the "Walls" page. If you go back to the "Site" tab and run from the "Project" page you should not get these errors. If you continue to get errors after running from a different page please send us the project file by opening a ticket along with details such as the version number of the software you are using, if the file was converted from another program and when these errors started occurring.