[Bf-python] LWO i/o broken

[Campbell Barton]

currently exporting and importing a UV mapped cube in blender dosnt work

Iv been updating scripts recently but mostly either my own or syntax of 
others, and have not messed with the inner workings of these ones.



+------------------------------------------------+
| Successfully exported test.lwo in 0.01 seconds |
+------------------------------------------------+
*** not using text object to log script
This is: lwo_import 0.3.0a - devel
Importing file:
/test.lwo
LightWave 6 (and above) format
Starting Pass 1: hold on tight
Traceback (most recent call last):
   File "<string>", line 237, in read
   File "<string>", line 403, in read_lwo2
   File "<string>", line 727, in read_clip
   File "/usr/local/lib/python2.5/struct.py", line 87, in unpack
     return o.unpack(s)
struct.error: unpack requires a string argument of length 4