My character model's faces have somehow been duplicated. If I delete a face, there's still a face there and I need to delete the face again to see the inside of the character. And its not just one area, it's all faces.
I tried opening an earlier version of my model and I can delete the faces normally. What could have happened on why the faces are doubled? And what can I do to remove them (I tried selecting all, then Remove Doubles, but nothing happened)?
I just fuond out that its happening everytime I add and apply a Mirror modifier after having already applied one. But why is it? I already applied a Mirror initially, I want to edit the mesh again so I need to add a Mirror modifier again. The 3rd time added, faces are now quadrupled.