I/O Problem When Downloading To Robot

[dadamson]

So we're trying to download a simple robot program to the cRIO, and are met with the error message "IO problem while downloading to robot" (I don't have the screen in front of me, but that's more or less it).

Here's the history:
I installed the WindRiver and DS updates, but did not update the cRIO image to v11. I was able to connect to the cRIO and download code, but it threw an exception at the start of the debug session because (I assume) the libraries didn't match.

I beat my head against that wall for a while, until I realized I had neglected the image update. After flashing the cRIO to v11, I am still able to ping the cRIO, I can establish a remote connection in WindRiver (and MAX), but I can't download anything to the robot - WindRiver reports an "IO problem while downloading to robot".

Help or insight would be greatly appreciated.
Proclamations of doom will be heard, but they shall be overcome.