Hi 

Maxim K very Kindly helped me with a problem, opening a cad file (which has been saved in 2010) in the 2017.2 update version (my software). He converted it and reported that there was a 'block' problem. The drawing I want to open is a topographical survey from a company I have started to use often (for building and land surveys). They have sent through another survey, and I cannot open this one also. Is there a solution to this? Can they save in a later version so that my version can open it? I don't want to have to rely on others helping me out with this every time they send a survey through. Any help would be greatly appreciated.