I spent like a month to finish a project on my laptop and now i cant open them!! omg help me!! I was using AutoCAD 2006 to finish them, n then i accidentally deleted the program(not the files though), and then i installed AutoCAD LT 2005, and all the files cant be open. It says "File is not valid". Whats wrong with it?
autocad
- Thread starter oshaniyaa
- Start date