It sounds like you have put in the wrong net id,
the symbol rate will be either 6952 or 6887 as you have mentioned.
Go into "providers" put a yes next to VM and scroll through to find your area.
It will have a number next to the area, put that in the net id, at the top of the page where you entered the symbol rate.
There is also a list here
Please help guys i have been trying to sought this for hours, i have been through Bees guide and an excellent guide it is.
I have VIX installed on my VU+ Ultimo with cable tuner and went through guide and can receive all SD channels, i have a test line from one of the providers on the forum and have installed as the guide but it was not a fresh install and could not receive anything on MGCAMD so put the line in CCCam and received ALL SD channels but only so HD channels eg Sky sports 1 & 2 have 0% signal & Sky sports 3 4 & 5 all work.
Could it be the wrong net Area/Net ID there seems to be 2 or 3 different Net ID's but none match Autoboquets Net ID.
Please help.