sharon Maxwell

I am viewing a survey file with AutoCAD 3D contours from my surveyor. A few months ago when I first used this file the coutours showed properly. Last week when I opened another survey file I got a question when opening the file that gave me an option to turn something on or off. I did not recognize the terminology and must have chosen the wrong response because now all the contours are gone on both these files and there are boxes everywhere with tiny vertical text on the right side referencing contour lableing. I have searched Help from my program, online and in this forum without finding a resolution. i have attached screen shots that might clarify what is happening. Any help to get the cotours and labeling back would be very much appreciated! If you need more information please let me know and i will get it for you. I am using AutoCAD LT 2013 for all the above experience.