I have AutoCad 2011 LT installed, but need to be able to open and make changes/additions to drawings, which were created, saved and emailed to me by an Engineer who must be using a newer version of LT because when I try to open them I get the message " This drawing file can not be opened because it was created with a new version of LT" It goes on to say to download True View, which I already have downloaded. As you already know. True View only allows me to view the drawings.
Can someone please advise me what I will need to do in order to be able to open and work with the newer drawings? I don't know which version of LT was used to create the drawings and I can't find out because the person who sent them to me is unavailable and out of the country for two weeks. I am desperate because I just built a new control panel and I need to update the drawings to show my as-builts.
Thank you very much in advance.
Tom