From Cedric Pinson, "I fixed a little issue with the lightwave scene loader. On the version 5 there are id on the command LoadObjectLayer in the scene file and of this version the current code use this field as a part of the filename, and it fails because the file is not found.
I just added a field version_ to read it at the beginning and added extra code to check it and read the extra field if needed and read the good filename"