One of the forum users that has a GC100 explained via PM how he made it work; and it seems that it is a firmware issue as we have done the same thing and he get the green bar and it stayed grey for me.

I will have to have the unit updated, for which global cache charges $35 (+shipping).

861v4 with ID40, DSP8000, DSP5500HC, DSP5500, MC200, Panasonic P-AE4000U, SI Black Diamond 142" screen