As you can see from this thread that I started:
http://www.chiefdelphi.com/forums/sh...light=no+comms
We faced a very similar problem at Suffield yesterday. We also were able to confirm the functionality of DLink both by FTA personnel and by letting our rookie team make use of it during a match. Note that we had also updated their cRIO to the v28 version and downloaded their code from our programming laptop. However, we were also never able to obtain communications at the competition. We tried several different configurations including back tracking to the v27 cRIO image with no success.
We are currently working feverishly to try to debug this issue. We currently have 2 DLinks (we purchased a second one when we thought we had fried the first one since it stopped working) connecting to eachother one as a Bridge and the other as an AccessPoint... and were able to connect to another laptop (configured with the same IP address as the cRIO) at the other end. However, when we replaced that laptop with the cRIO we were unable to see it. We then tried to backup further to the v25 cRIO image... still no communication.
Please keep in touch if you find out anything and we will do the same. Good luck!