I am having the same issue (with 1Tb NTFS WD drive on compatibility list). I have tried v1.8 and v1.9 of the forwarder and have also tried v1.2.0, v1.2.5 & v1.3.0 of WiiMC (Using new install each time after deleting the directory). I have found some interesting things:
If I delete the "" line...