Good morning, 

few week ago  i developed a hub (solidworks part).  today i did a very little adjustment, after that i saved it. after a normale "save", i saved it "save as a copy and open", with a different name. but when solidworks opened the file it started to "recostruction in progress", and after crashed. i started solidworks again and tried to open the original file and even with that file now solidworks started with "recostruction in progress". after several minutes a message occours: "file error, contact solidworks support". What can i do/where can i send the file (70Mb) to obtain assistence?