IGES import error

[ior=0]

I'm trying import an .IGS given to me by a client and I get "unknown import error".

I got the error in v7 of the translator basic plugin and have just undated to the v7.1 but still get the same error. The Max native IGES import opens it ok, as does Inventor LT.

But I would really like to used the npower plugin and the features it gives me. Any ideas why it might be broken?

I'm using MAX Design 2011(64)on Win7pro(64)

[ior=0]

bit more info on the error, this is the npower log file:
Started logging messages at Fri Nov 26 14:08:38 2010
Info: Reading \\Blackbox\work\JOBS...
Info: File completely read
Info:
Info: Found 0 points in file
Info: Found 0 curves in file
Info: Found 64 surfaces in file
Info: Found 0 trimmed surfaces in file
Info: Found 0 B-reps in file
Info: Found 0 B-rep faces in file
Info: Found 0 meshes in file
Info: Found 0 mesh faces in file
Info:
Error: Error creating entity 15 (type 128, form 0):
Reason: Knot vector error (e.g. u[i]>u[i+1])
Finished logging messages at Fri Nov 26 14:08:38 2010