What I understand from your post, is that you're having problems using the Table application.
In this case, what please let us know, are you getting any error message? Also, about your network layout, ports that you're using etc.
That way, we will be able to provide a proper response.
I'm not sure how the network layout would matter because as I said I have both the mobile and tablet version running on the same tablet... the mobile version would connnect whereas the tablet version did not. There wasn't an error message other than the normal message that displays when connection can not be made.
Network layout: FiOS Router -> SlingBox (Direct wired with ethernet cable) -> CableBox
Also, this is not a permanent issue just one I noticed one day while trying to connect via Wi-Fi to my slingbox. If I didn't have the mobile version on my tablet I just would have thought it was a normal network issue at my house however when the mobile version connected and the tablet version would not I knew the issue was not network related. I was just trying to inform SlingMedia to take a look at the code because maybe there is something there that would prevent connections from occurring in some instances.