Dear all, I updated the mid-rise apartment prototype model from DOE website from version 8.0 to version 9.1. After that, when I run the model, I got severe errors like: * Severe * checkSubSurfAzTiltNorm: Outward facing angle of subsurface differs more than 90.0 degrees from base surface. * ~~~ * Subsurface="TWINDOW14" Tilt = 90.0 Azimuth = 270.0 * ~~~ * Base surface="T EWALL C" Tilt = 90.0 Azimuth = 90.0 C:\fakepath\Capture.PNG Please let me know if you have any suggestions. Thank you