When I open one particular drawing on computer "A" it contains a layer called "minor contours" and all of the information from that layer is shown in the drawing. When I open the same file on computer "B" all of the minor contours lines are missing. The major contour lines and text are visible but the minor ones are not found. The one layer that contains the minor contours is there and I can draw new informaiton on that layer and it is visible. Also, if I was to save the drawing on computer "B" and re-open it on computer "A" the minor contours are no there. If i was to save the file on computer "A" and re-open the file on computer "A" the contours are there.
Also, I have tried this on another computer and it reacts the same as computer "A". For some reason it is just computer "B" that is not able to see the files.
So you are aware all of the computers are using autoCAD LT 2013 and are running windows 7. They are also all hp models with almost the same internal hardware and software.
Does anyone have any idea how to fix this so that computer "B" is able to see these contour lines and save the file without loosing the information.
Thank you