I understand that you are having some issues when trying to get the connection to your Slingbox through the SlingPlayer for Logitech Revue application.
In your case, the main issue is that you are trying to connect to a legacy Slingbox (Slingbox AV) which is not supported. The only supported units are the Slingbox SOLO and the Slingbox PRO-HD. The following links for Connected Devices will allow you to get the information about the supported Slingbox models:
I also recommend you to check this link in order to know which SlingPlayer software works with your Slingbox:
Which SlingPlayer software works with my Slingbox?
I, too am getting the same error. platform not supported reference 74CE-06BA. A different refeference but still not connection.
I have two Google tvs both get the error althought the code is different. I am using a HD-Pro with the latestest software.
My phone and tablet have no problem connecting to it. There is a Dish VIP 922 with an embedded sling device also on the network.
Of course, only the phones and PC can reach that, as it is not compatable with GTV. I have another question. Once you have set up the spotlight bookmark, is there away to change the device it points to?