No communications in DS, camera show on DB

[NeatNit]

Windows XP Professional SP3 (Hebrew unfortunately), using LabView.

As the title says - our driver station never gives us a green light for Communications (nor Robot Code), however the Dashboard DOES show us the camera image. In the Diagnostics tab, Enet Link is green and Robot is green.

Several times we have tried a complete removal and reinstallation of the entire programming suite from the 2011 kit of parts, with no change. (we did of course install all relavant updates from here each time.)
Worth mentioning is that some of the times after a reinstall, the driver station was nowhere to be found, and trying to install the DS and Utilities updates completed instantly, probably without doing anything.

My teammate tells me he's tried to transfer robot code while in that state, and it failed, but I have not witnessed it myself.

Everything works fine on our other computer (Windows 7, also Hebrew), so it cannot be a CRIO problem

Please help! What are we doing wrong?