As i was trying to convert this poly model into sub, the problem occurs. I have encounterd this problem loads of times ( what appears in the Script Editor is sth with "one or more duplicate edges" ).

I have no idea how to deal with those extra edges since the work gets so complicated. Does anyone know how to fix it....Thanks a lot!!!

I am new to Maya, this question may sound stupid but i don't know where to have my problem solved...so Pleassssee!!!



I have the file attached, so check it out!