I am using 1.11.1 openstudio and energyplus version is 8-5-0 my building consists of single story with attic, and i am not using ideal load or HVAC system, after I run the simulation i get 26 errors: 19 errors due to surface matching even the sketchup didn't show any errors after surface matching: ( i used matching tool and intersections for matching), however i noticed that all the errors are due to surface matching between the interior ceiling and the attic floor. C:\fakepath\2 error.JPG
and 7 other errors as shown in following figure: C:\fakepath\error.JPG
hope you kind cooperation to resolve these errors.