I have no idea what the problem is................... i am using Maya 2014 and I am following the Getting Started Tutorial exactly like what it says to construct the biker helmet. I deleted the inner faces and I selected the border edges for each piece of the mesh, 5 on each side, equally 10. It keeps showing the error "// Error: line 0: Invalid selection : polyBridgeEdge requires equal number of border edges to be selected for source and target selection." Any suggestions?
If the error is saying that you have a mismatch in the number of border edges, it sounds like you have a hidden vertex splitting one of your edges and you can't see it. This often happens if you split a polygon and then change your mind, then delete the edge you don't want. if you don't use the "delete edge/vertex" tool, you'll leave a vertex behind.
Try showing vertices - or (this is a workaround) just bridge one edge at a time.