error: unexpected line

I tried e3d with 2 different stl files but received this:

```
andy@oceanus:~/src/E3D/bin$ ./e3d -i /media/andy/AEFB-AAF0/MonoKnob_v2.STL 
e3d: Line 1: unexpected line
STLEXP Object01
```

```
andy@oceanus:~/src/E3D/bin$ ./e3d -i /media/andy/AEFB-AAF0/flute.stl 
e3d: Line 1: unexpected line
MESH-MESH-MESH-MESH-MESH-MESH-MESH-MESH-MESH-MESH-MESH-MESH-MESH-MESH-MESH-MESH
```