My On Demand feature is incredibly inconsistent. Sometimes it will work, but at least half the time it tells me that it us "unable to process your request" and gives me the code VOD_11:0X6. What is going on?
That error code indicates that the STB was unable to create a connection with the remote server. Make sure your router is powered on whenever you want to view VOD. You may also want to reseat the coax connection at your router and any affected STB's. Or get a truck roll to check out the coax in your house.
Any time I get any of those errors, I'll reset the router. If that doesn't do the trick, then just reset the STB and you should be fine. I used to get these errors all of the time, but ever since the latest 1.6.2 firmwar was released, I haven't experienced this error once. Not sure if it's coincidence or that they changed something to help VOD stability.