Just as the title says, I recently decided to replay through Hordes of the Underdark with a psion. So I started up my character, leveled him up, etc. Then I found whenever I tried to use the "Ultrablast" power I got an error saying I couldn't do so because of PnP settings. I didn't just try using the power in the inn where you begin the game, I went into the undermountain dungeon itself and still could not get it to work. Someone in the PRC chat told me to take a screenshot and post it, so here it is: (Sorry for how dark it looks)

Click on the picture and it will get larger so you can see it more clearly.
I don't know what other information might be important in order to figure out the problem, so I will provide as much as I can:
I have the game patched up to 1.69, I have both expansions, and I have a CEP pack 2.2, I had PRC 3.3 when I first saw this problem and just yesterday I upgraded to the 3.4 version and still got this same error. I also have no mods that clash with the PRC.
So can anyone tell me how to fix this? Also I tried upping the difficulty to the point where friendly fire was possible and I still got the same results. In fact I tried it on every difficulty setting just to check, and still the same results. Also I will note it will not allow me to right click on an enemy and select the Ultrablast power that way either, I guess you can't target anything specific with the power.