I have created all the blocks needed for the multi-view block. The plan view block shows up fine, it's the other views that I cannot get to show up in 2D views ( L, R, F, B).
I have attached the file with the view in which the blocks were created and the multi-view block inserted.
Your file has an unnamed UCS set current. The blocks appear to be drawn such that the plan view is in the XZ plane, and the positive Y-axis is "up". I do not know if this was the state of the drawing at the time you defined the blocks. If so, I would not expect that to be a recipe for success. I would suggest that you set the World UCS current (plan view is the XY plane, with positive Z-axis is "up"). The graphics for the blocks need to be drawn in the proper 3D orientation (Front and Back blocks in the World XZ plane, Left and Right blocks in the World YZ plane, Top and Bottom blocks in the World XY plane), so you may need to temporarily set the UCS to be able to draw the graphics, but be certain to reset the UCS to World before you define the blocks.
Although this blog article was written some time back, using an earlier release than you are likely usings, you may find the more detailed explanation of use: http://architects-desktop.blogspot.com/2006/10/mul